Westminster, Colorado
Westminster is a city in Adams County (61% of residents) and Jefferson County (39%), Colorado, with 116,242 residents in 2020. It spans 2 congressional districts: CO-08 (61%) and CO-07 (39%). It spans 3 state senate and 2 state house districts.
County
| County | Share of residents |
|---|---|
| Adams County | 61% |
| Jefferson County | 39% |
Congressional districts
| Congressional district | Share of residents |
|---|---|
| Colorado's 8th congressional district (CO-08) | 61% |
| Colorado's 7th congressional district (CO-07) | 39% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| Mayor | Nancy McNally | citywide | |
| U.S. Representative (CO-08) | Gabe Evans (R) | 202-225-5625 | 61% |
| U.S. Representative (CO-07) | Brittany Pettersen (D) | 202-225-2645 | 39% |
| 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 25) | William Lindstedt (Democratic) | 43% | |
| State Senator (State Senate District 19) | Lindsey Daugherty (Democratic) | 39% | |
| State Senator (State Senate District 21) | Adrienne Benavidez (Democratic) | 18% | |
| State Representative (State House District 29) | Lori Goldstein (Democratic) | 74% | |
| State Representative (State House District 35) | Lorena García (Democratic) | 26% |
From Wikidata (community-maintained); confirm on the city's website.
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); Mayors: Wikidata (CC0).
Local government
- Westminster website: http://www.ci.westminster.co.us/
- Westminster laws: search for the Westminster, Colorado code of ordinances
- Adams County laws: search for the Adams 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 residents |
|---|---|
| State Senate District 25 | 43% |
| State Senate District 19 | 39% |
| State Senate District 21 | 18% |
| State house district | Share of residents |
|---|---|
| State House District 29 | 74% |
| State House District 35 | 26% |
ZIP codes
Percentages mark ZIPs only partly in Westminster: the share of that ZIP's residents living in it.
- 80003 (17%)
- 80005 (8.4%)
- 80020 (19%)
- 80021 (73%)
- 80023 (12%)
- 80030 (96%)
- 80031 (86%)
- 80221 (<0.1%)
- 80234 (66%)
- 80260 (4.0%)
Get this in your AI agent
Your agent can get Westminster's counties and districts with shares, its ZIP codes (level='zcta'), and its boundary as GeoJSON (get_boundaries). Add https://boundarymcp.com/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:
related_geographies(id="us:place:0883835")
Westminster here is the Census Bureau's place boundary as of January 1, 2025. Shares are of 2020 Census population. Districts are the maps in force for the November 3, 2026 election.