ZIP code 80603: Lochbuie, CO
ZIP code 80603 is in Lochbuie (50% of residents), Commerce City (17%) and Brighton (2.2%), in Weld County (62%) and Adams County (38%), Colorado. 30% of its residents live outside city limits. It is in Colorado's 8th congressional district (93%) and Colorado's 4th congressional district (7.3%). Its state senate districts are State Senate District 1 (55%), State Senate District 21 (34%), State Senate District 13 (8.3%) and State Senate District 23 (2.1%); its state house districts are State House District 48 (65%), State House District 32 (18%), State House District 56 (14%) and State House District 19 (1.9%).
See it on the mapAll of Colorado
City and county
| City or town | Share of ZIP residents |
|---|---|
| Lochbuie | 50% |
| Commerce City | 17% |
| Brighton | 2.2% |
| Dacono | 0.1% |
| Northglenn | <0.1% |
| County | Share of ZIP residents |
|---|---|
| Weld County | 62% |
| Adams County | 38% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Keenesburg-Hudson CCD | 55% |
| Brighton CCD | 35% |
| Fort Lupton CCD | 5.4% |
| East Adams CCD | 2.4% |
| Erie-Frederick CCD | 1.9% |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| Colorado's 8th congressional district (CO-08) | 93% |
| Colorado's 4th congressional district (CO-04) | 7.3% |
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 |
|---|---|---|---|
| U.S. Representative (CO-08) | Gabe Evans (R) | 202-225-5625 | 93% |
| U.S. Representative (CO-04) | Lauren Boebert (R) | 202-225-4761 | 7.3% |
| 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 1) | Byron Pelton (R) | 55% | |
| State Senator (State Senate District 21) | Adrienne Benavidez (Democratic) | 34% | |
| State Senator (State Senate District 13) | Scott Bright (R) | 8.3% | |
| State Senator (State Senate District 23) | Barbara Kirkmeyer (R) | 2.1% | |
| State Representative (State House District 48) | Carlos Barron (R) | 65% | |
| State Representative (State House District 32) | María González (Democratic) | 18% | |
| State Representative (State House District 56) | Chris Richardson (R) | 14% | |
| State Representative (State House District 19) | Dan Woog (R) | 1.9% |
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
- Lochbuie website: http://www.lochbuie.org/
- Lochbuie laws: search for the Lochbuie, Colorado code of ordinances
- Commerce City website: http://www.ci.commerce-city.co.us/
- Commerce City laws: search for the Commerce City, Colorado code of ordinances
- Brighton website: http://www.brightonco.gov
- Brighton laws: search for the Brighton, Colorado code of ordinances
- Weld County laws: search for the Weld County, Colorado code of ordinances
- Adams County laws: search for the Adams County, Colorado code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 1 | 55% |
| State Senate District 21 | 34% |
| State Senate District 13 | 8.3% |
| State Senate District 23 | 2.1% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 48 | 65% |
| State House District 32 | 18% |
| State House District 56 | 14% |
| State House District 19 | 1.9% |
Voting precincts
19 voting precincts overlap ZIP 80603. 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:80603")
ZIP 80603 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.