Boundary Atlas

ZIP code 80550: Windsor, CO

ZIP code 80550 is in Windsor (79% of residents) and Severance (17%), in Weld County (85%) and Larimer County (15%), Colorado. It is in Colorado's 4th congressional district. Its state senate districts are State Senate District 23 (82%) and State Senate District 1 (18%); its state house district is State House District 65.

38,909residents (2020 Census)
52.4 sq miland area
2cities and towns
1congressional district
29voting precincts

See it on the mapAll of Colorado

City and county

City or townShare of ZIP residents
Windsor79%
Severance17%

CountyShare of ZIP residents
Weld County85%
Larimer County15%

Town or county subdivisionShare of ZIP residents
Windsor CCD85%
Loveland CCD15%
Ault CCD0.2%
Timnath-Wellington CCD<0.1%

Congressional district

Congressional districtShare of ZIP residents
Colorado's 4th congressional district (CO-04)100%
Colorado's 8th congressional district (CO-08)land only

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (CO-04)Lauren Boebert (R)202-225-4761100%
U.S. Representative (CO-08)Gabe Evans (R)202-225-5625<0.1%
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 23)Barbara Kirkmeyer (R)82%
State Senator (State Senate District 1)Byron Pelton (R)18%
State Senator (State Senate District 15)Janice Marchman (Democratic)<0.1%
State Representative (State House District 65)Lori Garcia Sander (R)100%
State Representative (State House District 51)Ron Weinberg (R)<0.1%
State Representative (State House District 64)Scott Slaugh (R)<0.1%

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 2382%
State Senate District 118%
State Senate District 15land only

State house districtShare of ZIP residents
State House District 65100%
State House District 51land only
State House District 64land only

Voting precincts

29 voting precincts overlap ZIP 80550. Map them, with each precinct's share of the ZIP's residents.

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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:80550")

ZIP 80550 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.