Boundary Atlas

ZIP code 80540: Lyons, CO

ZIP code 80540 is in Lyons (46% of residents) and Allenspark (2.9%), in Boulder County (69%) and Larimer County (31%), Colorado. 51% of its residents live outside city limits. It is in Colorado's 2nd congressional district. Its state senate district is State Senate District 15; its state house district is State House District 49.

4,710residents (2020 Census)
152.8 sq miland area
2cities and towns
1congressional district
6voting precincts

See it on the mapAll of Colorado

City and county

City or townShare of ZIP residents
Lyons46%
Allenspark2.9%

CountyShare of ZIP residents
Boulder County69%
Larimer County31%

Town or county subdivisionShare of ZIP residents
Longmont CCD61%
Estes Park CCD25%
Upper St. Vrain CCD8.2%
Loveland CCD6.1%

Congressional district

Congressional districtShare of ZIP residents
Colorado's 2nd congressional district (CO-02)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (CO-02)Joe Neguse (D)202-225-2161100%
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 15)Janice Marchman (Democratic)100%
State Representative (State House District 49)Lesley Smith (Democratic)100%

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 15100%

State house districtShare of ZIP residents
State House District 49100%

Voting precincts

6 voting precincts overlap ZIP 80540. Map them, with each precinct's share of the ZIP's residents.

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ZIP 80540 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.