ZIP code 80231: Denver, CO
ZIP code 80231 is in Denver (59% of residents) and Four Square Mile (41%), in Denver County (59%) and Arapahoe County (41%), Colorado. It is in Colorado's 1st congressional district (57%) and Colorado's 6th congressional district (43%). Its state senate districts are State Senate District 26 (86%) and State Senate District 32 (14%); its state house districts are State House District 9 (71%), State House District 3 (28%) and State House District 6 (1.2%).
See it on the mapAll of Colorado
City and county
| City or town | Share of ZIP residents |
|---|---|
| Denver | 59% |
| Four Square Mile | 41% |
| County | Share of ZIP residents |
|---|---|
| Denver County | 59% |
| Arapahoe County | 41% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Denver CCD | 59% |
| South Aurora CCD | 41% |
| Southwest Arapahoe CCD | land only |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| Colorado's 1st congressional district (CO-01) | 57% |
| Colorado's 6th congressional district (CO-06) | 43% |
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 |
|---|---|---|---|
| Mayor | Mike Johnston | 720-865-9000 | 59% |
| U.S. Representative (CO-01) | Diana DeGette (D) | 202-225-4431 | 57% |
| U.S. Representative (CO-06) | Jason Crow (D) | 202-225-7882 | 43% |
| 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 26) | Jeff Bridges (Democratic) | 86% | |
| State Senator (State Senate District 32) | Robert Rodriguez (Democratic) | 14% | |
| State Senator (State Senate District 27) | Tom Sullivan (Democratic) | <0.1% | |
| State Senator (State Senate District 29) | Iman Jodeh (Democratic) | <0.1% | |
| State Representative (State House District 9) | Emily Sirota (Democratic) | 71% | |
| State Representative (State House District 3) | Meg Froelich (Democratic) | 28% | |
| State Representative (State House District 6) | Sean Camacho (Democratic) | 1.2% | |
| State Representative (State House District 41) | Jamie Jackson (Democratic) | <0.1% |
Officials serving now (members of Congress until January 3, 2027). Sources: Mayors: Open States (public domain); State legislators: Open States (public domain); Members of Congress: the @unitedstates project, congress-legislators (CC0).
Local government
- Denver website: https://www.denvergov.org
- Denver council: Denver City Council
- Denver laws: search for the Denver, Colorado code of ordinances
- Four Square Mile laws: search for the Four Square Mile, Colorado code of ordinances
- Denver County website: https://www.denvergov.org/
- Denver County laws: search for the Denver County, Colorado code of ordinances
- Arapahoe County website: http://www.co.arapahoe.co.us
- Arapahoe County laws: search for the Arapahoe County, Colorado code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 26 | 86% |
| State Senate District 32 | 14% |
| State Senate District 27 | land only |
| State Senate District 29 | land only |
| State house district | Share of ZIP residents |
|---|---|
| State House District 9 | 71% |
| State House District 3 | 28% |
| State House District 6 | 1.2% |
| State House District 41 | land only |
Voting precincts
26 voting precincts overlap ZIP 80231. 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:80231")
ZIP 80231 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.