geo_crosswalk
Return official crosswalk targets for one canonical geography.
Description
Return official crosswalk targets for one canonical geography.
Each row includes the target entity, relation, exact decimal weight
where published, crosswalk source/vintage, and as_of. Results are in
stable target/relation/vintage order with cursor pagination; default 50,
maximum 200. Pass pagination.next_cursor back until has_more is
false. No official relationship is a successful empty page.
Errors are unknown_entity for a bad ID and bad_parameter for a bad
limit or cursor.
Example: geo_crosswalk(geography_id="county_48201", target_level="cbsa").
Parameters
Input schema advertised to MCP clients and mirrored by the REST query string.
| Name | Type | Required | Default | Constraints | Description |
|---|---|---|---|---|---|
| geography_id | string | Yes | — | — | Exact stable geography_id returned by geo_resolve. |
| target_level | "nation" | "state" | "county" | "cbsa" | "zip3" | "zcta" | "au_state" | "au_gccsa" | "au_sa4" | "au_sa3" | "au_lga" | Yes | — | — | Official target level, such as cbsa for a county or county for a ZCTA. |
| limit | integer | No | 50 | min 1, max 200 | Official relationships per page (1–200). |
| cursor | string | null | No | null | — | Opaque cursor from pagination.next_cursor. Keep geography_id and target_level constant while paging; omit for the first page. |
Provenance
Sources behind every value this tool returns.
- abs_asgsAustralian Bureau of Statistics
- census_geoU.S. Census Bureau
- census_rel2020U.S. Census Bureau
- omb_delineation_2023Office of Management and Budget (delineation lists distributed via the U.S. Census Bureau)
Dataset registry: geo_au_asgs, geo_us_reference