Boundary Atlas

ZIP code 81125: Center, CO

ZIP code 81125 is in Center (65% of residents), in Saguache County (86%), Rio Grande County (13%) and Alamosa County (0.9%), Colorado. 35% of its residents live outside city limits. It is in Colorado's 3rd congressional district. Its state senate district is State Senate District 6; its state house district is State House District 62.

2,989residents (2020 Census)
262.7 sq miland area
1cities and towns
1congressional district
7voting precincts

See it on the mapAll of Colorado

City and county

City or townShare of ZIP residents
Center65%

CountyShare of ZIP residents
Saguache County86%
Rio Grande County13%
Alamosa County0.9%

Town or county subdivisionShare of ZIP residents
Center CCD83%
Sargent CCD13%
Saguache CCD2.5%
Mosca-Hooper CCD0.9%
Del Norte CCD0.7%

Congressional district

Congressional districtShare of ZIP residents
Colorado's 3rd congressional district (CO-03)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (CO-03)Jeff Hurd (R)202-225-4676100%
U.S. SenatorJohn W. Hickenlooper (D)202-224-5941 · contact formstatewide
U.S. SenatorMichael F. Bennet (D)202-224-5852 · contact formstatewide
State Senator (State Senate District 6)Cleave Simpson (R)100%
State Representative (State House District 62)Matt Martinez (Democratic)100%

Officials serving now (members of Congress until January 3, 2027). Sources: State legislators: Open States (public domain); Members of Congress: the @unitedstates project, congress-legislators (CC0).

Local government

State legislative districts

State senate districtShare of ZIP residents
State Senate District 6100%

State house districtShare of ZIP residents
State House District 62100%

Voting precincts

7 voting precincts overlap ZIP 81125. Map them, with each precinct's share of the ZIP's residents.

Get this in your AI agent

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:81125")

ZIP 81125 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.