GEO MCP

Resolve a street address to its Census tract, then review any ambiguity before using the match.

Which Census tract contains this address?

Agents and analysts connecting supported U.S. addresses to Census geography.

Interface: MCP server
Access: Request access
Availability: Access by arrangement
Runs on: Hosted service

API key required

Request GEO MCP access

Cairn roles: AI connectors, Public records library
Evidence roles: Source, What is missing
Semantic context: Entity identity, Relationships
Contribution: Resolve supported places and inspect their geographic context within the available coverage.
Limit: Geographic resolution is bounded by source coverage and supported operations; it is not a guarantee of universal address matching.

Resolve an address

What it does

Resolve supported U.S. street addresses to Census tracts, counties and states.
Find candidate tracts for a ZIP code when an address cannot be resolved directly.
Inspect street names in candidate tracts to help disambiguate a location.

Live address lookup, November 3, 2026

Resolve 1600 Pennsylvania Avenue NW, Washington, DC 20500.

The service returned an exact match: Census tract 11001980000, county 11001 and state 11. The result identified its Census-based resolution path.

geo.resolve_address_to_tract({"address":"1600 Pennsylvania Avenue NW, Washington, DC 20500"})

This identifies a tract for the address. It does not establish parcel boundaries, ownership or storm exposure.

Census Geocoder method

Setup

Tell us your geography, address volume and MCP client. We will confirm supported operations and access through Loom or an agreed connection, then supply credentials and configuration.

Request GEO MCP access

Coverage and freshness

Supported U.S. addresses and Census geographic sources. A ZIP code can intersect several tracts; candidate lists are not exact address matches. Source availability and vintage affect results.

Limits

An exact tract match is not a property-boundary or ownership determination.
Unmatched or ambiguous addresses need clarification; do not select a candidate silently.
Storm screening and experimental parcel composition are outside this page's verified setup and example.

Related tools and guides

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