Census

Query the US Census Bureau API for demographic, economic, and geographic data.

Free API — No API key required.

Tools

Tool	Description
search_datasets	Search available US Census Bureau datasets by keyword (e.g. 'acs', 'decennial', 'business patterns')
get_variables	List variables available in a Census dataset. Use to discover variable codes before querying data.
get_geographies	List supported geography levels for a Census dataset (state, county, tract, etc.)
query_data	Query Census Bureau data. Returns tabular data for specified variables and geography. Requires CENSUS_API_KEY.
get_population	Convenience tool: get total population (B01001_001E) for a geography. Defaults to ACS 5-year 2022.

Installation

git clone https://github.com/PetrefiedThunder/mcp-census.git
cd mcp-census
npm install
npm run build

Usage with Claude Desktop

Add to your claude_desktop_config.json:

{
  "mcpServers": {
    "census": {
      "command": "node",
      "args": ["/path/to/mcp-census/dist/index.js"]
    }
  }
}

Usage with npx

npx mcp-census

License

MIT