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FIPS County Code Lookup — 3,231 US Counties

FIPS County Code Lookup — 3,231 US Counties

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github.com/easysolutions906Developer Tools0Updated 33w ago
Repository

About FIPS County Code Lookup — 3,231 US Counties

This MCP server looks up US counties by FIPS code, name, or state. It is intended for applications that need county-level identification, and also provides a REST API with batch lookup using US Census Bureau data.

Key features

  1. 01Look up counties by FIPS code
  2. 02Search by name and state
  3. 03List counties in a state
  4. 04View county and state statistics
  5. 05REST API and batch lookup

Use cases

  1. 01Check county details by FIPS code
  2. 02Filter locations by county name and state
  3. 03Process county codes in batches
  4. 04Retrieve county counts by state

MCP support

Exposes county lookup, search, state listing, and statistics tools over MCP. It uses stdio by default and can also run in Streamable HTTP mode.

#fips#counties#mortgage#gis#mcp

Configuration

Local server config is the same for every client. Copy it into your client’s MCP config file.

mcp.json · Universal config
{
  "mcpServers": {
    "fips-api": {
      "command": "npx",
      "args": [
        "-y",
        "@easysolutions906/mcp-fips"
      ]
    }
  }
}
Run commandnpx -y @easysolutions906/mcp-fips

Local servers need a runtime on your machine (e.g. Node.js 18+). Config file locations differ by client; see your client’s docs.

Packages
npm@easysolutions906/mcp-fips

Tools

No tool list yet

Local servers expose tools only once running on your machine, and the maintainer has not provided a tool list.

Details

From the project README

MCP FIPS Server

A Model Context Protocol (MCP) server for looking up US counties by FIPS code, name, or state. Covers all 50 states, DC, and territories.

Tools (4 total)

ToolDescription
fips_lookupLook up a county by its 5-digit FIPS code
fips_searchSearch counties by name, optionally filtered by state
fips_stateList all counties in a state by FIPS code or abbreviation
fips_statsGet database statistics: total counties, states, and counts by state

Install

npx @easysolutions906/mcp-fips
Claude Desktop

Add to your claude_desktop_config.json:

{
  "mcpServers": {
    "fips": {
      "command": "npx",
      "args": ["-y", "@easysolutions906/mcp-fips"]
    }
  }
}
Cursor

Add to .cursor/mcp.json:

{
  "mcpServers": {
    "fips": {
      "command": "npx",
      "args": ["-y", "@easysolutions906/mcp-fips"]
    }
  }
}

REST API

Set PORT env var to run as an HTTP server.

  • GET /lookup?fips=06037 -- look up county by FIPS code
  • GET /search?name=los+angeles&state=CA -- search counties by name
  • GET /state/:code -- list all counties in a state (e.g., /state/CA)
  • POST /lookup/batch -- batch lookup multiple FIPS codes
  • GET /stats -- county counts by state

Data Source

US Census Bureau FIPS county codes. Run npm run build-data to regenerate from the latest Census data.

Transport

  • stdio (default) -- for local use with Claude Desktop and Cursor
  • HTTP -- set PORT env var to start in Streamable HTTP mode on /mcp

Comments

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