Longmont, Colorado
Longmont is a city in Boulder County (99% of residents) and Weld County (1.3%), Colorado, with 98,937 residents in 2020. It is in Colorado's 2nd congressional district. It spans 2 state house districts. Its state senate district is State Senate District 17.
County
| County | Share of residents |
|---|---|
| Boulder County | 99% |
| Weld County | 1.3% |
Congressional district
| Congressional district | Share of residents |
|---|---|
| Colorado's 2nd congressional district (CO-02) | 100% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| Mayor | Susie Hidalgo-Fahring | 303-651-8601 | citywide |
| U.S. Representative (CO-02) | Joe Neguse (D) | 202-225-2161 | 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 17) | Katie Wallace (Democratic) | 100% | |
| State Representative (State House District 11) | Karen McCormick (Democratic) | 88% | |
| State Representative (State House District 19) | Dan Woog (R) | 12% |
Officials serving now (members of Congress until January 3, 2027). Sources: Mayors: Open States (public domain); State legislators: Open States (public domain); Members of Congress: the @unitedstates project, congress-legislators (CC0).
Local government
- Longmont laws: search for the Longmont, Colorado code of ordinances
- Boulder County website: http://www.bouldercounty.org
- Boulder County laws: search for the Boulder County, Colorado code of ordinances
- Weld County laws: search for the Weld County, Colorado code of ordinances
State legislative districts
| State senate district | Share of residents |
|---|---|
| State Senate District 17 | 100% |
| State house district | Share of residents |
|---|---|
| State House District 11 | 88% |
| State House District 19 | 12% |
ZIP codes
Percentages mark ZIPs only partly in Longmont: the share of that ZIP's residents living in it.
Get this in your AI agent
Your agent can get Longmont'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:0845970")
Longmont 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.