ZIP code 80123: Denver, CO
ZIP code 80123 is in Denver (27% of residents), Littleton (18%), Columbine (17%), Ken Caryl (10%), Lakewood (3.8%), Columbine Valley (3.2%) and Bow Mar (1.8%), in Jefferson County (49%), Denver County (27%) and Arapahoe County (24%), Colorado. 20% of its residents live outside city limits. It is in Colorado's 6th congressional district (49%), Colorado's 1st congressional district (27%) and Colorado's 7th congressional district (24%). Its state senate districts are State Senate District 16 (54%), State Senate District 26 (27%) and State Senate District 20 (19%); its state house districts are State House District 38 (33%), State House District 28 (30%), State House District 1 (27%) and State House District 25 (10%).
See it on the mapAll of Colorado
City and county
| City or town | Share of ZIP residents |
|---|---|
| Denver | 27% |
| Littleton | 18% |
| Columbine | 17% |
| Ken Caryl | 10% |
| Lakewood | 3.8% |
| Columbine Valley | 3.2% |
| Bow Mar | 1.8% |
| County | Share of ZIP residents |
|---|---|
| Jefferson County | 49% |
| Denver County | 27% |
| Arapahoe County | 24% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Northeast Jefferson CCD | 49% |
| Denver CCD | 27% |
| Southwest Arapahoe CCD | 24% |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| Colorado's 6th congressional district (CO-06) | 49% |
| Colorado's 1st congressional district (CO-01) | 27% |
| Colorado's 7th congressional district (CO-07) | 24% |
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 | 27% |
| U.S. Representative (CO-06) | Jason Crow (D) | 202-225-7882 | 49% |
| U.S. Representative (CO-01) | Diana DeGette (D) | 202-225-4431 | 27% |
| U.S. Representative (CO-07) | Brittany Pettersen (D) | 202-225-2645 | 24% |
| 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 16) | Chris Kolker (Democratic) | 54% | |
| State Senator (State Senate District 26) | Jeff Bridges (Democratic) | 27% | |
| State Senator (State Senate District 20) | Lisa Cutter (Democratic) | 19% | |
| State Representative (State House District 38) | Gretchen Rydin (Democratic) | 33% | |
| State Representative (State House District 28) | Sheila Lieder (Democratic) | 30% | |
| State Representative (State House District 1) | Javier Mabrey (Democratic) | 27% | |
| State Representative (State House District 25) | Tammy Story (Democratic) | 10% |
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
- Littleton website: https://www.littletonco.gov
- Littleton laws: search for the Littleton, Colorado code of ordinances
- Columbine laws: search for the Columbine, Colorado code of ordinances
- Jefferson County website: http://www.jeffco.us
- Jefferson County laws: search for the Jefferson County, Colorado code of ordinances
- Denver County website: https://www.denvergov.org/
- Denver County laws: search for the Denver County, Colorado code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 16 | 54% |
| State Senate District 26 | 27% |
| State Senate District 20 | 19% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 38 | 33% |
| State House District 28 | 30% |
| State House District 1 | 27% |
| State House District 25 | 10% |
Voting precincts
33 voting precincts overlap ZIP 80123. 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:80123")
ZIP 80123 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.