Boundary Atlas

ZIP code 80108: Castle Rock, CO

ZIP code 80108 is in Castle Rock (44% of residents), Castle Pines (34%) and Castle Pines Village (13%), in Douglas County, Colorado. 7.8% of its residents live outside city limits. It is in Colorado's 4th congressional district. Its state senate districts are State Senate District 30 (52%) and State Senate District 2 (48%); its state house districts are State House District 45 (54%) and State House District 39 (46%).

32,188residents (2020 Census)
35.3 sq miland area
3cities and towns
1congressional district
21voting precincts

See it on the mapAll of Colorado

City and county

City or townShare of ZIP residents
Castle Rock44%
Castle Pines34%
Castle Pines Village13%

CountyShare of ZIP residents
Douglas County100%

Town or county subdivisionShare of ZIP residents
Sedalia CCD57%
Parker CCD43%

Congressional district

Congressional districtShare of ZIP residents
Colorado's 4th congressional district (CO-04)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (CO-04)Lauren Boebert (R)202-225-4761100%
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 30)John Carson (R)52%
State Senator (State Senate District 2)Lisa Frizell (R)48%
State Representative (State House District 45)Max Brooks (R)54%
State Representative (State House District 39)Brandi Bradley (R)46%

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 3052%
State Senate District 248%

State house districtShare of ZIP residents
State House District 4554%
State House District 3946%

Voting precincts

21 voting precincts overlap ZIP 80108. Map them, with each precinct's share of the ZIP's residents.

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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:

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ZIP 80108 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.