Connects Claude to the U.S. Census Bureau's data APIs with a workflow built for interactive queries. Seven tools cover dataset discovery, variable search, geography resolution, and data retrieval. You can search variables by keyword, convert place names or addresses to FIPS codes via TIGERweb and the Census Geocoder, then pull estimates with margins of error. The compare tool ranks geographies in a single call, useful for state by state or county by county analysis. Variables are cached locally with configurable TTL to avoid repeated fetches. Suppression codes get decoded to readable reasons instead of raw sentinel values. Requires a free Census API key for data queries but not for browsing datasets or searching variables.
claude mcp add --transport stdio cyanheads-census-mcp-server uvx census-mcp-server