Boundary Atlas

ZIP code 95370: Tuolumne County, CA

ZIP code 95370 is in Sonora (18% of residents), Phoenix Lake (15%), Mono Vista (12%), East Sonora (8.6%), Columbia (4.7%), Cedar Ridge (4.4%), Tuttletown (2.8%) and Twain Harte (1.3%), in Tuolumne County, California. 34% of its residents live outside city limits. It is in California's 5th congressional district. Its state senate district is State Senate District 4; its state house district is Assembly District 8.

28,090residents (2020 Census)
103.1 sq miland area
10cities and towns
1congressional district
27voting precincts

See it on the mapAll of California

City and county

City or townShare of ZIP residents
Sonora18%
Phoenix Lake15%
Mono Vista12%
East Sonora8.6%
Columbia4.7%
Cedar Ridge4.4%
Tuttletown2.8%
Twain Harte1.3%
Soulsbyville1.0%
Jamestown0.4%

CountyShare of ZIP residents
Tuolumne County100%

Town or county subdivisionShare of ZIP residents
East Sonora-Phoenix Lake CCD47%
Sonora CCD39%
Twain Harte-Tuolumne City CCD14%

Congressional district

Congressional districtShare of ZIP residents
California's 5th congressional district (CA-05)100%

State legislative districts

State senate districtShare of ZIP residents
State Senate District 4100%

State house districtShare of ZIP residents
Assembly District 8100%

Voting precincts

27 voting precincts overlap ZIP 95370. Map them, with each precinct's share of the ZIP's residents.

Get this in your AI agent

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:95370")

ZIP 95370 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.