Boundary Atlas

ZIP code 81073: Springfield, CO

ZIP code 81073 is in Springfield (73% of residents), in Baca County, Colorado. 27% of its residents live outside city limits. It is in Colorado's 4th congressional district. Its state senate district is State Senate District 35; its state house district is State House District 47.

1,817residents (2020 Census)
639.3 sq miland area
1cities and towns
1congressional district
5voting precincts

See it on the mapAll of Colorado

City and county

City or townShare of ZIP residents
Springfield73%

CountyShare of ZIP residents
Baca County100%

Town or county subdivisionShare of ZIP residents
Springfield CCD97%
Pritchett CCD2.6%
Campo CCD0.3%

Congressional district

Congressional districtShare of ZIP residents
Colorado's 4th congressional district (CO-04)100%

State legislative districts

State senate districtShare of ZIP residents
State Senate District 35100%

State house districtShare of ZIP residents
State House District 47100%

Voting precincts

5 voting precincts overlap ZIP 81073. Map them, with each precinct's share of the ZIP's residents.

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Your agent can get these cities, counties, districts and precincts with their shares, and their GeoJSON boundaries, from Boundary Atlas. Add https://atlas-production-d344.up.railway.app/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:

related_geographies(id="us:zcta:81073")

ZIP 81073 here is the Census Bureau's ZIP Code Tabulation Area, which approximates the USPS ZIP Code; PO-box-only ZIPs have none. Districts are the maps in force for the November 3, 2026 election.