Boundary Atlas

ZIP code 80481: Bark Ranch, CO

ZIP code 80481 is in Bark Ranch (37% of residents), Ward (24%) and Hidden Lake (4.4%), in Boulder County, Colorado. 35% 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.

544residents (2020 Census)
43.7 sq miland area
3cities and towns
1congressional district
2voting precincts

See it on the mapAll of Colorado

City and county

City or townShare of ZIP residents
Bark Ranch37%
Ward24%
Hidden Lake4.4%

CountyShare of ZIP residents
Boulder County100%

Town or county subdivisionShare of ZIP residents
Bald Mountain CCD80%
Upper St. Vrain CCD20%

Congressional district

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

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

2 voting precincts overlap ZIP 80481. 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:

related_geographies(id="us:zcta:80481")

ZIP 80481 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.