ZIP code 81120: Antonito, CO
ZIP code 81120 is in Antonito (31% of residents), in Conejos County (98%) and Rio Arriba County (2.2%), Colorado. 69% of its residents live outside city limits. It is in Colorado's 3rd congressional district (98%) and New Mexico's 3rd congressional district (2.2%). Its state senate districts are State Senate District 6 (98%) and State Senate District 5 (2.2%); its state house districts are State House District 62 (98%) and State House District 41 (2.2%).
See it on the mapAll of Colorado
City and county
| City or town | Share of ZIP residents |
|---|---|
| Antonito | 31% |
| Conejos | 0.4% |
| County | Share of ZIP residents |
|---|---|
| Conejos County | 98% |
| Rio Arriba County | 2.2% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Antonito CCD | 64% |
| West Conejos CCD | 26% |
| Manassa CCD | 8.2% |
| Vallecitos CCD | 2.2% |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| Colorado's 3rd congressional district (CO-03) | 98% |
| New Mexico's 3rd congressional district (NM-03) | 2.2% |
This ZIP is split between districts. A mailing address in it could be in either; the map or locate_point gives the district for an exact address.
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (CO-03) | Jeff Hurd (R) | 202-225-4676 | 98% |
| U.S. Representative (NM-03) | Teresa Leger Fernandez (D) | 202-225-6190 | 2.2% |
| U.S. Senator | John W. Hickenlooper (D) | 202-224-5941 · contact form | statewide |
| U.S. Senator | Michael F. Bennet (D) | 202-224-5852 · contact form | statewide |
| State Senator (State Senate District 6) | Cleave Simpson (R) | 98% | |
| State Senator (State Senate District 5) | Leo Jaramillo (Democratic) | 2.2% | |
| State Representative (State House District 62) | Matt Martinez (Democratic) | 98% |
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
- Antonito laws: search for the Antonito, Colorado code of ordinances
- Conejos County website: http://www.conejoscounty.org
- Conejos County laws: search for the Conejos County, Colorado code of ordinances
- Rio Arriba County website: http://www.rio-arriba.org
- Rio Arriba County laws: search for the Rio Arriba County, Colorado code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 6 | 98% |
| State Senate District 5 | 2.2% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 62 | 98% |
| State House District 41 | 2.2% |
Voting precincts
7 voting precincts overlap ZIP 81120. It also crosses into NM. 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:81120")
ZIP 81120 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.