US Places, Then

io.github.ianderso/us-places-mcp

US places then: county on a date, PLSS land, GNIS names, old topo maps, post offices.

Connect this server

Add this to your MCP client config — claude_desktop_config.json (Claude Desktop) or .cursor/mcp.json (Cursor).Suits: Claude Desktop · Cursor.

{
  "mcpServers": {
    "us-places-mcp": {
      "command": "uvx",
      "args": [
        "us-places-mcp"
      ],
      "env": {
        "US_PLACES_OVERPASS_URL": "https://overpass-api.openhistoricalmap.org/api/interpreter",
        "US_PLACES_PLSS_URL": "https://gis.blm.gov/arcgis/rest/services/Cadastral/BLM_Natl_PLSS_CadNSDI/MapServer",
        "US_PLACES_GNIS_URL": "https://carto.nationalmap.gov/arcgis/rest/services/geonames/MapServer",
        "US_PLACES_GNIS_ARCHIVE_URL": "https://prd-tnm.s3.amazonaws.com/StagedProducts/GeographicNames/Archive/MainDomestic",
        "US_PLACES_TNM_URL": "https://tnmaccess.nationalmap.gov/api/v1/products",
        "US_PLACES_DATAVERSE_URL": "https://dataverse.harvard.edu",
        "US_PLACES_CACHE_DIR": "~/.cache/us-places-mcp",
        "US_PLACES_TIMEOUT": "60"
      }
    }
  }
}

Environment variables

US_PLACES_OVERPASS_URLOpenHistoricalMap's Overpass endpoint.
US_PLACES_PLSS_URLBLM's national PLSS (CadNSDI) map service.
US_PLACES_GNIS_URLUSGS's GNIS map service (The National Map).
US_PLACES_GNIS_ARCHIVE_URLWhere USGS keeps the August 2021 GNIS state files.
US_PLACES_TNM_URLThe National Map's TNM Access products API.
US_PLACES_DATAVERSE_URLHarvard Dataverse, which holds the US post offices dataset.
US_PLACES_CACHE_DIRDirectory for the on-disk response cache and the downloaded datasets.
US_PLACES_TIMEOUTHTTP timeout in seconds.

A starting point — check the repository for exact arguments and setup. Restart your client after editing the config.

Category: Developer Tools
Version: 0.2.0
Registry: active
Published: 10/6/2026

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Show visitors that US Places, Then is listed here — it’s also the link we check for a free listing.

HTML — for your website

<a href="https://serverdex.io/server/io-github-ianderso-us-places-mcp?utm_source=badge"><img src="https://serverdex.io/brand/badge.svg" alt="US Places, Then — listed on Serverdex" width="123" height="40" loading="lazy"></a>

Recommended. A dofollow link from your own domain is the one that counts for search engines, and it's the link we check for a free listing.

Markdown — for your README

[![US Places, Then — listed on Serverdex](https://serverdex.io/brand/badge.svg)](https://serverdex.io/server/io-github-ianderso-us-places-mcp?utm_source=badge)

Nice for visibility, but GitHub marks README links nofollow, so it doesn't pass authority. Use the HTML badge on your site as well.