diff --git a/e2e/USER_STORIES.md b/e2e/USER_STORIES.md
index 5f15a169..a6ed3766 100644
--- a/e2e/USER_STORIES.md
+++ b/e2e/USER_STORIES.md
@@ -1558,6 +1558,21 @@ Acceptance:
 - A member given "List banned members" finds "Banned Members" in the directory
   menu they had no menu in before, and still no "Admins".
 
+### US-131 — Say where you are and find members on a map
+
+As a member, I want to give a town, state or country on my profile and see where
+the rest of a space is, so that I can find the people near me.
+
+Acceptance:
+
+- The location field on the profile form searches places by name, leaves out
+  towns of under a thousand people, and publishes what was picked to kind 0.
+- Choosing a town publishes a geohash with it; choosing a state or a country
+  publishes the name alone, so nothing finer than the answer given goes out.
+- The directory offers a map whenever a member has a geohash, pins each of them
+  with their avatar, and opens a pin's profile when it is clicked.
+- The directory's search narrows the map as it narrows the list.
+
 ### US-098 — Browse and create hosted spaces
 
 As a space owner, I want to see the spaces I host and spin up new ones, so that
diff --git a/e2e/harness/index.ts b/e2e/harness/index.ts
index ccf86465..e78ddb2a 100644
--- a/e2e/harness/index.ts
+++ b/e2e/harness/index.ts
@@ -88,12 +88,14 @@ export {
   getHosting,
   mockBlossom,
   mockDufflepud,
+  mockGeocoding,
   mockLivekit,
   mockOpenRouterSpeech,
   mockOpenRouterTranscription,
 } from "./net/http"
 export type {
   DufflepudFixtures,
+  GeocodedPlace,
   HostingFixtures,
   HostingHandle,
   HostingRecord,
diff --git a/e2e/harness/net/http.ts b/e2e/harness/net/http.ts
index 9697fd7c..89d3e07c 100644
--- a/e2e/harness/net/http.ts
+++ b/e2e/harness/net/http.ts
@@ -19,6 +19,9 @@ const PLAUSIBLE_ORIGIN = "https://plausible.coracle.social"
 // Transcription and speech both go here, against whichever key the user has saved.
 const OPENROUTER_ORIGIN = "https://openrouter.ai"
 
+// The place search behind the profile's location field, in src/app/location.ts.
+const GEOCODING_ORIGIN = "https://geocoding-api.open-meteo.com"
+
 // .test resolves nowhere and the block-all aborts the navigation, so a spec sees the redirect.
 const CHECKOUT_ORIGIN = "https://checkout.test"
 
@@ -615,6 +618,21 @@ export const mockLivekit = (context: BrowserContext, {serverUrl, token}: Livekit
     },
   )
 
+// One row of Open-Meteo's answer. `feature_code` is PCLI for a country and PPL* for a town.
+export type GeocodedPlace = {
+  name: string
+  admin1?: string
+  country?: string
+  feature_code: string
+  population?: number
+  latitude: number
+  longitude: number
+}
+
+/** The place search, answering every term with the same places. */
+export const mockGeocoding = (context: BrowserContext, results: GeocodedPlace[]) =>
+  context.route(`${GEOCODING_ORIGIN}/**`, route => route.fulfill({json: {results}}))
+
 /** Serves a png for anything loaded as an image, so a fixture's avatar and blob urls are never fetched. */
 export const mockImages = (context: BrowserContext) =>
   context.route(
diff --git a/e2e/specs/people.spec.ts b/e2e/specs/people.spec.ts
index f0db3244..faadf8dd 100644
--- a/e2e/specs/people.spec.ts
+++ b/e2e/specs/people.spec.ts
@@ -2,7 +2,7 @@ import {createHash} from "node:crypto"
 import type {Locator, Page} from "@playwright/test"
 import {npubEncode} from "nostr-tools/nip19"
 import {HOUR, MINUTE, MONTH, uniq} from "@welshman/lib"
-import {NOTE, STATUS, makeEvent} from "@welshman/util"
+import {NOTE, PROFILE, STATUS, makeEvent} from "@welshman/util"
 import type {SignedEvent} from "@welshman/util"
 import {FollowList, Note, PinList, Profile} from "@welshman/domain"
 import {
@@ -11,7 +11,9 @@ import {
   WEBP,
   expect,
   getPublished,
+  getPublishedEvents,
   mockBlossom,
+  mockGeocoding,
   noteEditor,
   profilePath,
   spacePath,
@@ -621,3 +623,128 @@ test("US-082 mute an account", async ({seed, as}) => {
   await expect(pageContent(page).getByText("Salt on the rigging this morning")).toBeVisible()
   await expect(pageContent(page).getByText("The gulls have taken the mainsail")).toBeVisible()
 })
+
+test("US-131 say where you are and find members on a map", async ({seed, as}) => {
+  const scenario = await seed(({relay, user}) => {
+    const space = relay("space")
+
+    space.room("general", {name: "General"})
+    space.join(user.alice, "general")
+    space.join(user.bob, "general")
+    space.profile(user.alice, {name: "Alice Anders"})
+
+    // Bob shares a town already, so the directory has a pin before alice adds hers.
+    space.event(user.bob, () =>
+      space
+        .kind(Profile)
+        .writer()
+        .update({name: "Bob Barnacle", location: "Wellington, New Zealand"})
+        .addTags(["g", "rbsm1"])
+        .renderTemplate(),
+    )
+
+    space.relayList(user.alice)
+    space.relayList(user.bob)
+  })
+
+  const {url} = scenario.space("space")
+  const page = await as(users.alice, profilePath(users.alice.pubkey))
+
+  await mockGeocoding(page.context(), [
+    {
+      name: "Portland",
+      admin1: "Oregon",
+      country: "United States",
+      feature_code: "PPLA2",
+      population: 652503,
+      latitude: 45.52345,
+      longitude: -122.67621,
+    },
+    {
+      name: "Portlaw",
+      admin1: "Munster",
+      country: "Ireland",
+      feature_code: "PPL",
+      population: 900,
+      latitude: 52.28833,
+      longitude: -7.32056,
+    },
+  ])
+
+  const openEditForm = async () => {
+    await page.getByRole("button", {name: "Edit profile"}).click()
+
+    return topDialog(page)
+  }
+
+  const form = await openEditForm()
+
+  await form.getByPlaceholder("Search for a town").fill("portl")
+
+  // A town of under a thousand people is not somewhere to be from.
+  await expect(form.getByRole("button", {name: "Portlaw, Munster, Ireland"})).toHaveCount(0)
+
+  await form.getByRole("button", {name: "Portland, Oregon, United States"}).click()
+  await form.getByRole("button", {name: "Save Changes"}).click()
+
+  await expect(page.getByRole("alert")).toContainText("Your profile has been updated!")
+  await expect(pageContent(page).getByText("Portland, Oregon, United States")).toBeVisible()
+
+  const published = getPublishedEvents(page.context(), PROFILE)
+
+  expect(JSON.parse(published[0].content).location).toBe("Portland, Oregon, United States")
+  expect(published[0].tags).toContainEqual(["g", "c20fb"])
+
+  await page.goto(`${spacePath(url)}/directory`)
+
+  const showMap = page.getByRole("button", {name: "Map"})
+
+  await expect(showMap).toBeVisible()
+
+  await showMap.click()
+
+  const pins = page.locator(".leaflet-marker-icon")
+
+  await expect(pins).toHaveCount(2)
+
+  await pins.and(page.locator('[title="Bob Barnacle"]')).click()
+
+  const profile = page.getByRole("dialog", {name: "Profile details"})
+
+  await expect(profile.getByText("Bob Barnacle")).toBeVisible()
+  await expect(profile.getByText("Wellington, New Zealand")).toBeVisible()
+
+  await profile.getByRole("button", {name: "Close dialog"}).click()
+
+  // Searching narrows the map the same way it narrows the list.
+  await page.getByPlaceholder("Search people or roles...").fill("Anders")
+
+  await expect(pins).toHaveCount(1)
+
+  await page.getByRole("button", {name: "List"}).click()
+
+  await expect(pins).toHaveCount(0)
+
+  // A country is not a pin, so choosing one takes alice off the map.
+  await page.goto(profilePath(users.alice.pubkey))
+
+  const secondForm = await openEditForm()
+
+  await expect(secondForm.getByText("Portland, Oregon, United States")).toBeVisible()
+
+  await secondForm.getByRole("button", {name: "Clear location"}).click()
+  await secondForm.getByPlaceholder("Search for a town").fill("portl")
+  await secondForm.getByRole("button", {name: "Portland, Oregon, United States"}).click()
+  await secondForm.getByLabel("How much of your location to show").selectOption({label: "Country"})
+
+  await expect(secondForm.getByText("United States", {exact: true})).toBeVisible()
+
+  await secondForm.getByRole("button", {name: "Save Changes"}).click()
+
+  await expect(page.getByRole("alert")).toContainText("Your profile has been updated!")
+
+  const republished = getPublishedEvents(page.context(), PROFILE)
+
+  expect(JSON.parse(republished[1].content).location).toBe("United States")
+  expect(republished[1].tags.map(tag => tag[0])).not.toContain("g")
+})
diff --git a/electron/main.ts b/electron/main.ts
index 01f5d80b..56affb7d 100644
--- a/electron/main.ts
+++ b/electron/main.ts
@@ -133,12 +133,12 @@ createCapacitorElectronApp({
   csp: {
     // SvelteKit's meta CSP owns scripts; the platform default would block its hashed bootstrap.
     policy: "base-uri 'self'; object-src 'none'",
-    // Capawesome 0.1.1's dev policy, plus Flotilla's analytics origin and blob workers.
+    // Capawesome 0.1.1's dev policy, plus Flotilla's analytics origin, blob workers and map tiles.
     devPolicy: [
       "default-src 'self'",
       "script-src 'self' 'unsafe-inline' 'unsafe-eval' https://plausible.coracle.social",
       "style-src 'self' 'unsafe-inline'",
-      "img-src 'self' data: blob:",
+      "img-src 'self' data: blob: https://*.basemaps.cartocdn.com",
       "font-src 'self' data:",
       "media-src 'self' blob:",
       "connect-src 'self' https: wss: ws: http:",
diff --git a/package.json b/package.json
index b0ff6865..5d89d4d7 100644
--- a/package.json
+++ b/package.json
@@ -93,6 +93,7 @@
     "@tiptap/core": "^2.27.3",
     "@tiptap/pm": "^2.27.3",
     "@tiptap/suggestion": "^2.27.3",
+    "@types/leaflet": "^1.9.22",
     "@types/qrcode": "^1.5.6",
     "@types/throttle-debounce": "^5.0.2",
     "@vite-pwa/assets-generator": "^1.0.2",
@@ -118,6 +119,7 @@
     "hono": "^4.12.23",
     "husky": "^9.1.7",
     "idb": "^8.0.3",
+    "leaflet": "^1.9.4",
     "livekit-client": "^2.17.2",
     "marked": "^18.0.9",
     "nostr-signer-capacitor-plugin": "github:coracle-social/nostr-signer-capacitor-plugin#main",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 9b752494..025e2bdf 100644
Binary files a/pnpm-lock.yaml and b/pnpm-lock.yaml differ
diff --git a/src/app/components/InputLocation.svelte b/src/app/components/InputLocation.svelte
new file mode 100644
index 00000000..e0031520
--- /dev/null
+++ b/src/app/components/InputLocation.svelte
@@ -0,0 +1,148 @@
+<script lang="ts">
+  import {debounce} from "throttle-debounce"
+  import MapPoint from "@assets/icons/map-point.svg?dataurl"
+  import Magnifier from "@assets/icons/magnifier.svg?dataurl"
+  import CloseCircle from "@assets/icons/close-circle.svg?dataurl"
+  import Icon from "@lib/components/Icon.svelte"
+  import Button from "@lib/components/Button.svelte"
+  import Spinner from "@lib/components/Spinner.svelte"
+  import {
+    displayPlace,
+    granularityLabels,
+    placeGeohash,
+    placeGranularities,
+    searchPlaces,
+  } from "@app/location"
+  import type {Granularity, Place} from "@app/location"
+
+  type Props = {
+    location?: string
+    geohash?: string
+  }
+
+  let {location = $bindable(), geohash = $bindable()}: Props = $props()
+
+  const fullName = (candidate: Place) => displayPlace(candidate, placeGranularities(candidate)[0])
+
+  const apply = (picked: Place) => {
+    location = displayPlace(picked, granularity)
+    geohash = placeGeohash(picked, granularity)
+  }
+
+  const search = debounce(400, async (value: string) => {
+    try {
+      const places = await searchPlaces(value)
+
+      if (value === term.trim()) {
+        results = places
+        failed = false
+      }
+    } catch (error) {
+      console.error(error)
+      failed = true
+    } finally {
+      loading = false
+    }
+  })
+
+  const onInput = () => {
+    const value = term.trim()
+
+    if (value.length > 1) {
+      loading = true
+      failed = false
+      search(value)
+    } else {
+      results = []
+      loading = false
+    }
+  }
+
+  const pick = (picked: Place) => {
+    place = picked
+    granularity = placeGranularities(picked)[0]
+    term = ""
+    results = []
+    apply(picked)
+  }
+
+  const changeGranularity = () => {
+    if (place) {
+      apply(place)
+    }
+  }
+
+  const clear = () => {
+    place = undefined
+    location = undefined
+    geohash = undefined
+  }
+
+  let term = $state("")
+  let results: Place[] = $state([])
+  let loading = $state(false)
+  let failed = $state(false)
+  let place: Place | undefined = $state()
+  let granularity: Granularity = $state("city")
+  let list: HTMLElement | undefined = $state()
+
+  // The field sits deep enough in the form that results can open below the fold.
+  $effect(() => {
+    if (results.length > 0) {
+      list?.scrollIntoView({block: "nearest"})
+    }
+  })
+</script>
+
+{#if location}
+  <div class="flex flex-col gap-2">
+    <div class="input flex w-full items-center gap-2">
+      <Icon icon={MapPoint} />
+      <span class="min-w-0 grow truncate">{location}</span>
+      <Button
+        class="button button-ghost button-xs button-square"
+        aria-label="Clear location"
+        onclick={clear}>
+        <Icon size={4} icon={CloseCircle} />
+      </Button>
+    </div>
+    {#if place}
+      <select
+        class="select input"
+        aria-label="How much of your location to show"
+        bind:value={granularity}
+        onchange={changeGranularity}>
+        {#each placeGranularities(place) as option (option)}
+          <option value={option}>{granularityLabels[option]}</option>
+        {/each}
+      </select>
+    {/if}
+  </div>
+{:else}
+  <div class="flex flex-col gap-2">
+    <label class="input flex w-full items-center gap-2">
+      <Icon icon={Magnifier} />
+      <input
+        bind:value={term}
+        oninput={onInput}
+        class="min-w-0 grow"
+        type="text"
+        placeholder="Search for a town, city, or country..." />
+      <Spinner {loading} />
+    </label>
+    {#if failed}
+      <p class="text-sm text-error">Location search is unavailable right now.</p>
+    {:else if results.length > 0}
+      <ul bind:this={list} class="menu bg-surface max-h-60 gap-1 overflow-auto rounded-2xl p-2">
+        {#each results as result (result.latitude + "," + result.longitude)}
+          <li>
+            <Button class="w-full text-left" onclick={() => pick(result)}>
+              <Icon size={4} icon={MapPoint} />
+              {fullName(result)}
+            </Button>
+          </li>
+        {/each}
+      </ul>
+    {/if}
+  </div>
+{/if}
diff --git a/src/app/components/ProfileDetail.svelte b/src/app/components/ProfileDetail.svelte
index 701b7318..117a6b2d 100644
--- a/src/app/components/ProfileDetail.svelte
+++ b/src/app/components/ProfileDetail.svelte
@@ -18,6 +18,7 @@
   import Profile from "@app/components/Profile.svelte"
   import ProfileAbout from "@app/components/ProfileAbout.svelte"
   import ProfileBadges from "@app/components/ProfileBadges.svelte"
+  import ProfileLocation from "@app/components/ProfileLocation.svelte"
   import ProfileMenu from "@app/components/ProfileMenu.svelte"
   import ProfilePinnedNote from "@app/components/ProfilePinnedNote.svelte"
   import ProfileStatus from "@app/components/ProfileStatus.svelte"
@@ -141,6 +142,7 @@
         <MenuButton component={ProfileMenu} componentProps={{pubkey, url, customActions}} />
       </div>
       <ProfileStatus {pubkey} {url} />
+      <ProfileLocation {pubkey} {url} />
       <ProfileAbout {pubkey} {url} />
       <ProfileBadges {pubkey} {url} />
       <ProfilePinnedNote {pubkey} {url} />
diff --git a/src/app/components/ProfileEdit.svelte b/src/app/components/ProfileEdit.svelte
index 95921a26..17bfdd59 100644
--- a/src/app/components/ProfileEdit.svelte
+++ b/src/app/components/ProfileEdit.svelte
@@ -1,4 +1,5 @@
 <script lang="ts">
+  import {spec} from "@welshman/lib"
   import AltArrowLeft from "@assets/icons/alt-arrow-left.svg?dataurl"
   import {errorMessage} from "@lib/util"
   import Icon from "@lib/components/Icon.svelte"
@@ -9,16 +10,26 @@
   import {clearModals} from "@app/modal"
   import {pushToast} from "@app/toast"
   import {profiles, user} from "@app/core"
+  import {getProfileGeohash} from "@app/location"
 
-  const initialValues = {profile: {...$profiles.get($user.pubkey)?.values}}
+  const existingProfile = $profiles.get($user.pubkey)
+
+  const initialValues = {
+    profile: {...existingProfile?.values},
+    geohash: getProfileGeohash(existingProfile),
+  }
 
   const back = () => history.back()
 
-  const onsubmit = async ({profile}: Values) => {
+  const onsubmit = async ({profile, geohash}: Values) => {
     loading = true
 
     try {
-      const command = await $profiles.update(writer => writer.update(profile))
+      const command = await $profiles.update(writer => {
+        writer.update(profile).dropTags(spec(["g"]))
+
+        return geohash ? writer.addTags(["g", geohash]) : writer
+      })
       const error = (await command.publish().settled()).getError()
 
       if (error) {
diff --git a/src/app/components/ProfileEditForm.svelte b/src/app/components/ProfileEditForm.svelte
index 9ed71346..5f1c6d6e 100644
--- a/src/app/components/ProfileEditForm.svelte
+++ b/src/app/components/ProfileEditForm.svelte
@@ -5,6 +5,7 @@
     picture?: string
     banner?: string
     website?: string
+    location?: string
     nip05?: string
     lud06?: string
     lud16?: string
@@ -12,6 +13,7 @@
 
   export type Values = {
     profile: ProfileValues
+    geohash?: string
   }
 </script>
 
@@ -27,6 +29,7 @@
   import Modal from "@lib/components/Modal.svelte"
   import ModalBody from "@lib/components/ModalBody.svelte"
   import ModalFooter from "@lib/components/ModalFooter.svelte"
+  import InputLocation from "@app/components/InputLocation.svelte"
   import InputProfilePicture from "@app/components/InputProfilePicture.svelte"
   import InfoHandle from "@app/components/InfoHandle.svelte"
   import {pushModal} from "@app/modal"
@@ -100,6 +103,17 @@
         Give a brief introduction to why you're here.
       {/snippet}
     </Field>
+    <Field>
+      {#snippet label()}
+        <p>Location</p>
+      {/snippet}
+      {#snippet input()}
+        <InputLocation bind:location={values.profile.location} bind:geohash={values.geohash} />
+      {/snippet}
+      {#snippet info()}
+        A town, state or country. Only a town puts you on a space's member map.
+      {/snippet}
+    </Field>
     {#if !isSignup}
       <Field>
         {#snippet label()}
diff --git a/src/app/components/ProfileLocation.svelte b/src/app/components/ProfileLocation.svelte
new file mode 100644
index 00000000..01e9d7d9
--- /dev/null
+++ b/src/app/components/ProfileLocation.svelte
@@ -0,0 +1,24 @@
+<script lang="ts">
+  import {removeUndefined} from "@welshman/lib"
+  import MapPoint from "@assets/icons/map-point.svg?dataurl"
+  import Icon from "@lib/components/Icon.svelte"
+  import {profiles} from "@app/core"
+  import {getProfileLocation} from "@app/location"
+
+  type Props = {
+    pubkey: string
+    url?: string
+  }
+
+  const {pubkey, url}: Props = $props()
+
+  const profile = $profiles.one(pubkey, removeUndefined([url]))
+  const location = $derived(getProfileLocation($profile))
+</script>
+
+{#if location}
+  <p class="flex w-fit items-center gap-2 text-sm opacity-75">
+    <Icon icon={MapPoint} size={4} />
+    {location}
+  </p>
+{/if}
diff --git a/src/app/components/ProfilePage.svelte b/src/app/components/ProfilePage.svelte
index ee89f5be..c19ed9fc 100644
--- a/src/app/components/ProfilePage.svelte
+++ b/src/app/components/ProfilePage.svelte
@@ -16,6 +16,7 @@
   import Spinner from "@lib/components/Spinner.svelte"
   import ProfileAbout from "@app/components/ProfileAbout.svelte"
   import ProfileCircle from "@app/components/ProfileCircle.svelte"
+  import ProfileLocation from "@app/components/ProfileLocation.svelte"
   import ProfileTrust from "@app/components/ProfileTrust.svelte"
   import ProfileSharedSpaces from "@app/components/ProfileSharedSpaces.svelte"
   import ProfileStatus from "@app/components/ProfileStatus.svelte"
@@ -202,6 +203,8 @@
 
               <ProfileStatus pubkey={target} />
 
+              <ProfileLocation pubkey={target} />
+
               {#if website}
                 <Link
                   external
diff --git a/src/app/components/SignUp.svelte b/src/app/components/SignUp.svelte
index fb02e1bc..bc0cbf2f 100644
--- a/src/app/components/SignUp.svelte
+++ b/src/app/components/SignUp.svelte
@@ -34,6 +34,7 @@
   setKey("signup.email", "")
   setKey("signup.secret", makeSecret())
   setKey("signup.profile", {})
+  setKey("signup.geohash", undefined)
   setKey("signup.clientOptions", undefined)
 
   const hasPomade = POMADE_SIGNERS.length >= 3
@@ -44,6 +45,13 @@
     // Join default spaces so the relay is warmed up before we publish below
     await Promise.all(DEFAULT_SPACES.map(url => attemptRelayAccess(url)))
 
+    const geohash = getKey<string>("signup.geohash")
+    const profileWriter = $domain.writer(Profile).update(getKey<ProfileValues>("signup.profile")!)
+
+    if (geohash) {
+      profileWriter.addTags(["g", geohash])
+    }
+
     // Add default outbox/inbox/messaging relays, profile, spaces
     const publications = await Promise.all([
       $app.use(Publisher).publish({
@@ -55,10 +63,7 @@
         relays: [...DEFAULT_RELAYS, ...DEFAULT_SPACES],
       }),
       $app.use(Publisher).publish({
-        event: await $domain
-          .writer(Profile)
-          .update(getKey<ProfileValues>("signup.profile")!)
-          .renderTemplate(),
+        event: await profileWriter.renderTemplate(),
         relays: [...DEFAULT_RELAYS, ...DEFAULT_SPACES],
       }),
       $roomLists.setRelays(DEFAULT_SPACES).then(publish),
diff --git a/src/app/components/SignUpProfile.svelte b/src/app/components/SignUpProfile.svelte
index 7a7bbb4b..9ca06312 100644
--- a/src/app/components/SignUpProfile.svelte
+++ b/src/app/components/SignUpProfile.svelte
@@ -16,14 +16,16 @@
 
   const {next, step, totalSteps}: Props = $props()
 
-  const profile = getKey<Values["profile"]>("signup.profile")!
-
-  const initialValues = {profile}
+  const initialValues = {
+    profile: getKey<Values["profile"]>("signup.profile")!,
+    geohash: getKey<Values["geohash"]>("signup.geohash"),
+  }
 
   const back = () => history.back()
 
-  const onsubmit = ({profile}: Values) => {
+  const onsubmit = ({profile, geohash}: Values) => {
     setKey("signup.profile", profile)
+    setKey("signup.geohash", geohash)
     next()
   }
 </script>
diff --git a/src/app/components/SpaceMemberMap.svelte b/src/app/components/SpaceMemberMap.svelte
new file mode 100644
index 00000000..3414354d
--- /dev/null
+++ b/src/app/components/SpaceMemberMap.svelte
@@ -0,0 +1,106 @@
+<script lang="ts">
+  import "leaflet/dist/leaflet.css"
+
+  import {mount, onMount, unmount} from "svelte"
+  import type {Map as LeafletMap, Marker} from "leaflet"
+  import type {Maybe} from "@welshman/lib"
+  import ProfileCircle from "@app/components/ProfileCircle.svelte"
+  import ProfileDetail from "@app/components/ProfileDetail.svelte"
+  import {pushModal} from "@app/modal"
+  import {activeTheme} from "@app/theme"
+  import type {MemberPin} from "@app/social"
+
+  type Props = {
+    url: string
+    pins: MemberPin[]
+  }
+
+  const {url, pins}: Props = $props()
+
+  const tileUrl = $derived(
+    `https://{s}.basemaps.cartocdn.com/${$activeTheme === "dark" ? "dark" : "light"}_all/{z}/{x}/{y}{r}.png`,
+  )
+
+  const openProfile = (pubkey: string) => pushModal(ProfileDetail, {pubkey, url})
+
+  let element: HTMLElement
+  let leaflet: Maybe<typeof import("leaflet")> = $state()
+  let map: Maybe<LeafletMap> = $state()
+
+  $effect(() => {
+    if (leaflet) {
+      const created = leaflet
+        .map(element, {worldCopyJump: true, zoomControl: false})
+        .setView([25, 0], 2)
+
+      leaflet.control.zoom({position: "bottomright"}).addTo(created)
+      map = created
+
+      return () => created.remove()
+    }
+  })
+
+  $effect(() => {
+    if (leaflet && map) {
+      const tiles = leaflet
+        .tileLayer(tileUrl, {
+          maxZoom: 12,
+          attribution:
+            '<a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a>, <a href="https://carto.com/attributions">CARTO</a>',
+        })
+        .addTo(map)
+
+      return () => tiles.remove()
+    }
+  })
+
+  $effect(() => {
+    const markers: Marker[] = []
+    const avatars: Record<string, unknown>[] = []
+
+    if (leaflet && map) {
+      for (const pin of pins) {
+        const target = document.createElement("div")
+
+        avatars.push(
+          mount(ProfileCircle, {
+            target,
+            props: {
+              pubkey: pin.pubkey,
+              url,
+              size: 10,
+              class: "bg-surface ring-2 ring-surface shadow-lg",
+            },
+          }),
+        )
+
+        markers.push(
+          leaflet
+            .marker([pin.latitude, pin.longitude], {
+              title: pin.display,
+              // An empty className replaces the white box leaflet gives a div icon.
+              icon: leaflet.divIcon({html: target, className: "", iconSize: [40, 40]}),
+            })
+            .on("click", () => openProfile(pin.pubkey))
+            .addTo(map),
+        )
+      }
+
+      if (markers.length > 0) {
+        map.fitBounds(leaflet.featureGroup(markers).getBounds(), {maxZoom: 8, padding: [40, 40]})
+      }
+    }
+
+    return () => {
+      markers.forEach(marker => marker.remove())
+      avatars.forEach(avatar => unmount(avatar))
+    }
+  })
+
+  onMount(async () => {
+    leaflet = await import("leaflet")
+  })
+</script>
+
+<!-- Leaflet's panes sit at z-index 400, which covers a modal without a stacking context here. -->
+<div bind:this={element} class="isolate min-h-96 flex-1 overflow-hidden rounded-2xl"></div>
diff --git a/src/app/location.ts b/src/app/location.ts
new file mode 100644
index 00000000..9931a3d9
--- /dev/null
+++ b/src/app/location.ts
@@ -0,0 +1,89 @@
+import {removeUndefined} from "@welshman/lib"
+import {tagSpec, tagValue} from "@welshman/util"
+import type {ProfileReader} from "@welshman/domain"
+import {encodeGeohash} from "@lib/geohash"
+
+export type Place = {
+  city?: string
+  region?: string
+  country: string
+  latitude: number
+  longitude: number
+}
+
+export type Granularity = "city" | "region" | "country"
+
+export const granularityLabels: Record<Granularity, string> = {
+  city: "City",
+  region: "State or region",
+  country: "Country",
+}
+
+type GeocodingResult = {
+  name: string
+  admin1?: string
+  country?: string
+  feature_code: string
+  population?: number
+  latitude: number
+  longitude: number
+}
+
+// Open-Meteo indexes GeoNames' populated places and countries, never a state on its own.
+export const searchPlaces = async (term: string) => {
+  const url = new URL("https://geocoding-api.open-meteo.com/v1/search")
+
+  url.searchParams.set("name", term)
+  url.searchParams.set("count", "20")
+  url.searchParams.set("language", "en")
+  url.searchParams.set("format", "json")
+
+  const response = await fetch(url)
+  const {results = []}: {results?: GeocodingResult[]} = await response.json()
+  const places: Place[] = []
+
+  for (const result of results) {
+    const {name, admin1, country, feature_code, population, latitude, longitude} = result
+
+    if (feature_code === "PCLI") {
+      places.push({country: name, latitude, longitude})
+    } else if (country && population && population >= 1000) {
+      places.push({city: name, region: admin1, country, latitude, longitude})
+    }
+  }
+
+  return places
+}
+
+export const placeGranularities = (place: Place) => {
+  const granularities: Granularity[] = []
+
+  if (place.city) {
+    granularities.push("city")
+  }
+
+  if (place.region) {
+    granularities.push("region")
+  }
+
+  granularities.push("country")
+
+  return granularities
+}
+
+export const displayPlace = (place: Place, granularity: Granularity) =>
+  removeUndefined([
+    granularity === "city" ? place.city : undefined,
+    granularity === "country" ? undefined : place.region,
+    place.country,
+  ]).join(", ")
+
+// A pin is finer than a state or a country asked to be, so only a city publishes one.
+export const placeGeohash = (place: Place, granularity: Granularity) =>
+  granularity === "city" ? encodeGeohash(place.latitude, place.longitude, 5) : undefined
+
+export const getProfileLocation = (profile?: ProfileReader): string | undefined =>
+  profile?.values.location
+
+export const getProfileGeohash = (profile?: ProfileReader) =>
+  profile ? tagValue(tagSpec("g"), profile.tags()) : undefined
diff --git a/src/app/social.ts b/src/app/social.ts
index e86d15dc..9560a1ba 100644
--- a/src/app/social.ts
+++ b/src/app/social.ts
@@ -32,7 +32,9 @@ import {withGetter} from "@welshman/store"
 import {displayPubkey, getCommentTagValues, getReplyTagValues, getReplyTags} from "@welshman/domain"
 import {Events, FollowLists, MuteLists, Network, Profiles, Router} from "@welshman/app"
 import type {IApp} from "@welshman/app"
+import {decodeGeohash} from "@lib/geohash"
 import {deriveUserItem, fromApp, profiles, user, usePlugin} from "@app/core"
+import {getProfileGeohash} from "@app/location"
 import {DEFAULT_PUBKEYS} from "@app/env"
 
 // People
@@ -62,6 +64,34 @@ export const deriveDisplaysByPubkey = (pubkeys: string[], url?: string) => {
   )
 }
 
+export type MemberPin = {
+  pubkey: string
+  display: string
+  latitude: number
+  longitude: number
+}
+
+export const deriveMemberPins = (pubkeys: string[], url?: string) => {
+  const relays = removeUndefined([url])
+
+  for (const pubkey of pubkeys) {
+    profiles.get().load(pubkey, relays).catch(noop)
+  }
+
+  return derived(profileIndex, $index =>
+    removeUndefined(
+      pubkeys.map(pubkey => {
+        const profile = $index.get(pubkey)
+        const coordinates = decodeGeohash(getProfileGeohash(profile))
+
+        return coordinates
+          ? {pubkey, display: profile?.display() ?? displayPubkey(pubkey), ...coordinates}
+          : undefined
+      }),
+    ),
+  )
+}
+
 export const bootstrapPubkeys = derived(deriveUserItem(FollowLists), $userFollowList => {
   const appPubkeys = DEFAULT_PUBKEYS.split(",")
   const userPubkeys = shuffle($userFollowList?.pubkeys() ?? [])
diff --git a/src/lib/geohash.ts b/src/lib/geohash.ts
new file mode 100644
index 00000000..9d329650
--- /dev/null
+++ b/src/lib/geohash.ts
@@ -0,0 +1,69 @@
+export const encodeGeohash = (latitude: number, longitude: number, precision: number) => {
+  const latitudes = [-90, 90]
+  const longitudes = [-180, 180]
+
+  let hash = ""
+  let bits = 0
+  let index = 0
+  let even = true
+
+  while (hash.length < precision) {
+    const bounds = even ? longitudes : latitudes
+    const middle = (bounds[0] + bounds[1]) / 2
+
+    if ((even ? longitude : latitude) > middle) {
+      index = index * 2 + 1
+      bounds[0] = middle
+    } else {
+      index = index * 2
+      bounds[1] = middle
+    }
+
+    even = !even
+    bits += 1
+
+    if (bits === 5) {
+      hash += "0123456789bcdefghjkmnpqrstuvwxyz"[index]
+      bits = 0
+      index = 0
+    }
+  }
+
+  return hash
+}
+
+export const decodeGeohash = (hash?: string) => {
+  const indexes = (hash ?? "")
+    .toLowerCase()
+    .split("")
+    .map(character => "0123456789bcdefghjkmnpqrstuvwxyz".indexOf(character))
+
+  if (indexes.length === 0 || indexes.includes(-1)) {
+    return undefined
+  }
+
+  const latitudes = [-90, 90]
+  const longitudes = [-180, 180]
+
+  let even = true
+
+  for (const index of indexes) {
+    for (const mask of [16, 8, 4, 2, 1]) {
+      const bounds = even ? longitudes : latitudes
+      const middle = (bounds[0] + bounds[1]) / 2
+
+      if (index & mask) {
+        bounds[0] = middle
+      } else {
+        bounds[1] = middle
+      }
+
+      even = !even
+    }
+  }
+
+  return {
+    latitude: (latitudes[0] + latitudes[1]) / 2,
+    longitude: (longitudes[0] + longitudes[1]) / 2,
+  }
+}
diff --git a/src/routes/spaces/[relay]/directory/+page.svelte b/src/routes/spaces/[relay]/directory/+page.svelte
index 832c5156..524faab5 100644
--- a/src/routes/spaces/[relay]/directory/+page.svelte
+++ b/src/routes/spaces/[relay]/directory/+page.svelte
@@ -4,18 +4,20 @@
   import UsersGroup from "@assets/icons/users-group-rounded.svg?dataurl"
   import AddCircle from "@assets/icons/add-circle.svg?dataurl"
   import Magnifier from "@assets/icons/magnifier.svg?dataurl"
+  import MapIcon from "@assets/icons/map.svg?dataurl"
   import Icon from "@lib/components/Icon.svelte"
   import Button from "@lib/components/Button.svelte"
   import MenuButton from "@lib/components/MenuButton.svelte"
   import PageContent from "@lib/components/PageContent.svelte"
   import SpaceBar from "@app/components/SpaceBar.svelte"
   import SpaceMember from "@app/components/SpaceMember.svelte"
+  import SpaceMemberMap from "@app/components/SpaceMemberMap.svelte"
   import SpaceInvite from "@app/components/SpaceInvite.svelte"
   import SpaceDirectoryMenu from "@app/components/SpaceDirectoryMenu.svelte"
   import {deriveSpacePermissions} from "@app/management"
   import {deriveSpaceMemberRoles} from "@app/roles"
   import {relayMemberLists, relayRoles} from "@app/core"
-  import {deriveDisplaysByPubkey} from "@app/social"
+  import {deriveDisplaysByPubkey, deriveMemberPins} from "@app/social"
   import {decodeRelay} from "@app/relays"
   import {pushModal} from "@app/modal"
   import type {PageProps} from "./$types"
@@ -54,6 +56,13 @@
     ),
   )
 
+  const pins = $derived(
+    deriveMemberPins(
+      $memberList.map(m => m.pubkey),
+      url,
+    ),
+  )
+
   const matchesTerm = (pubkey: string, t: string) =>
     ($displays.get(pubkey) ?? "").toLowerCase().includes(t) || pubkey.toLowerCase().includes(t)
 
@@ -71,6 +80,16 @@
         roleList.some(role => (role.label() ?? "").toLowerCase().includes(t)),
     )
   })
+
+  const visiblePins = $derived.by(() => {
+    const visible = new Set(visibleMembers.map(m => m.pubkey))
+
+    return $pins.filter(pin => visible.has(pin.pubkey))
+  })
+
+  const toggleMap = () => (showMap = !showMap)
+
+  let showMap = $state(false)
 </script>
 
 <SpaceBar>
@@ -97,15 +116,25 @@
 </SpaceBar>
 
 <PageContent class="@container flex flex-col gap-4 p-4">
-  <label class="input input-group flex w-full items-center gap-2 card">
-    <Icon size={4} icon={Magnifier} />
-    <input
-      bind:value={term}
-      class="min-w-0 grow"
-      type="text"
-      placeholder="Search people or roles..." />
-  </label>
-  {#if visibleMembers.length === 0}
+  <div class="flex items-center gap-2">
+    <label class="input input-group flex w-full items-center gap-2 card">
+      <Icon size={4} icon={Magnifier} />
+      <input
+        bind:value={term}
+        class="min-w-0 grow"
+        type="text"
+        placeholder="Search people or roles..." />
+    </label>
+    {#if $pins.length > 0}
+      <Button class="button button-neutral shrink-0" onclick={toggleMap}>
+        <Icon size={4} icon={showMap ? UsersGroup : MapIcon} />
+        {showMap ? "List" : "Map"}
+      </Button>
+    {/if}
+  </div>
+  {#if showMap}
+    <SpaceMemberMap {url} pins={visiblePins} />
+  {:else if visibleMembers.length === 0}
     <p class="flex flex-col items-center py-20 text-center">No members found.</p>
   {:else}
     <div class="grid grid-cols-1 gap-4 @3xl:grid-cols-2 @5xl:grid-cols-3">