ZIP code 80421: Park County, CO
ZIP code 80421 is in Park County (100%) and Jefferson County (0.3%), Colorado, outside any city or Census-designated place. It is in Colorado's 7th congressional district. Its state senate district is State Senate District 4; its state house districts are State House District 13 (100%) and State House District 25 (0.3%).
See it on the mapAll of Colorado
City and county
Outside any city or Census-designated place.
| County | Share of ZIP residents |
|---|---|
| Park County | 100% |
| Jefferson County | 0.3% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Fairplay CCD | 100% |
| South Jefferson CCD | 0.3% |
Congressional district
| Congressional district | Share of ZIP residents |
|---|---|
| Colorado's 7th congressional district (CO-07) | 100% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (CO-07) | Brittany Pettersen (D) | 202-225-2645 | 100% |
| 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 4) | Mark Baisley (R) | 100% | |
| State Representative (State House District 13) | Julie McCluskie (Democratic) | 100% | |
| State Representative (State House District 25) | Tammy Story (Democratic) | 0.3% |
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
- Park County website: https://www.parkco.us/
- Park County laws: search for the Park County, Colorado code of ordinances
- Jefferson County website: http://www.jeffco.us
- Jefferson County laws: search for the Jefferson County, Colorado code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 4 | 100% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 13 | 100% |
| State House District 25 | 0.3% |
Voting precincts
8 voting precincts overlap ZIP 80421. 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:80421")
ZIP 80421 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.