About io.github.cyanheads/census-mcp-server
io.github.cyanheads/census-mcp-server is an MCP server in the Maps category: query U.S. Census Bureau data, variables, and geography via MCP.
Install
claude mcp add io-github-cyanheads-census-mcp-server -- npx -y @cyanheads/census-mcp-servernpx -y @cyanheads/census-mcp-serverThis server has no ConduID identity, so agent calls to it are not receipted. Pin the version you install and review the source before granting it credentials.
Tools (8)
census_compare_geographiesRank and compare variables across multiple geographies — all counties in a state, all states nationally, or a named set. Sorted table output, with the same predicate filtering.
Parameters not published.
census_get_variableFetch full metadata for one or more variable codes — label, concept, predicate type, universe, MOE sibling.
Parameters not published.
census_list_datasetsBrowse available Census Bureau datasets (ACS5, ACS1, Population Estimates, Decennial, County Business Patterns, Economic Census, Nonemployer Statistics) with vintage years and dataset codes.
Parameters not published.
census_list_geographiesList the geography levels supported by a dataset and year, with parent requirements and example FIPS values.
Parameters not published.
census_list_predicate_valuesList the codes a filter dimension accepts (`EMPSZES`, `LFO`, `POPGROUP`, `NAICS2017`…), from the dataset dictionary or a live wildcard enumeration.
Parameters not published.
census_query_dataQuery a Census dataset for variables at a specific geography. Returns estimates with MOE, suppression codes resolved to readable reasons, and predicate filtering for the business datasets.
Parameters not published.
census_resolve_geographyConvert place names (e.g., "King County, WA") or street addresses to Census FIPS identifiers via TIGERweb and Census Geocoder.
Parameters not published.
census_search_variablesKeyword search across variable labels and concept groups. On ACS, returns estimate and margin-of-error codes together.
Parameters not published.
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