Boundary Atlas

ZIP code 80645: La Salle, CO

ZIP code 80645 is in La Salle (56% of residents), in Weld County, Colorado. 44% of its residents live outside city limits. It is in Colorado's 8th congressional district (96%) and Colorado's 4th congressional district (3.8%). Its state senate districts are State Senate District 13 (69%) and State Senate District 1 (31%); its state house districts are State House District 48 (93%), State House District 63 (3.9%) and State House District 50 (2.9%).

4,245residents (2020 Census)
92.7 sq miland area
2cities and towns
2congressional districts
8voting precincts

See it on the mapAll of Colorado

City and county

City or townShare of ZIP residents
La Salle56%
Evans0.6%

CountyShare of ZIP residents
Weld County100%

Town or county subdivisionShare of ZIP residents
La Salle-Gilcrest CCD86%
Kersey-Gill CCD4.2%
Keenesburg-Hudson CCD3.8%
Platteville CCD3.7%
Greeley CCD2.3%

Congressional districts

Congressional districtShare of ZIP residents
Colorado's 8th congressional district (CO-08)96%
Colorado's 4th congressional district (CO-04)3.8%

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

OfficeMemberContactShare of residents
U.S. Representative (CO-08)Gabe Evans (R)202-225-562596%
U.S. Representative (CO-04)Lauren Boebert (R)202-225-47613.8%
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 13)Scott Bright (R)69%
State Senator (State Senate District 1)Byron Pelton (R)31%
State Representative (State House District 48)Carlos Barron (R)93%
State Representative (State House District 63)Dusty Johnson (R)3.9%
State Representative (State House District 50)Ryan Gonzalez (R)2.9%

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 1369%
State Senate District 131%

State house districtShare of ZIP residents
State House District 4893%
State House District 633.9%
State House District 502.9%

Voting precincts

8 voting precincts overlap ZIP 80645. 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:80645")

ZIP 80645 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.