Boundary Atlas

ZIP code 95421: Cazadero, CA

ZIP code 95421 is in Cazadero (21% of residents) and Timber Cove (1.6%), in Sonoma County, California. 77% of its residents live outside city limits. It is in California's 2nd congressional district. Its state senate district is State Senate District 2; its state house district is Assembly District 2.

1,409residents (2020 Census)
143.4 sq miland area
2cities and towns
1congressional district
10voting precincts

See it on the mapAll of California

City and county

City or townShare of ZIP residents
Cazadero21%
Timber Cove1.6%

CountyShare of ZIP residents
Sonoma County100%

Town or county subdivisionShare of ZIP residents
Russian River-Sonoma Coast CCD100%

Congressional district

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

State legislative districts

State senate districtShare of ZIP residents
State Senate District 2100%

State house districtShare of ZIP residents
Assembly District 2100%

Voting precincts

10 voting precincts overlap ZIP 95421. 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:95421")

ZIP 95421 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.