Boundary Atlas

ZIP code 83301: Twin Falls, ID

ZIP code 83301 is in Twin Falls (85% of residents), in Twin Falls County (100%) and Jerome County (0.1%), Idaho. 15% of its residents live outside city limits. It is in Idaho's 2nd congressional district. Its state senate districts are State Senate District 25 (88%), State Senate District 24 (12%) and State Senate District 26 (0.1%); its state house districts are State House District 25 (88%), State House District 24 (12%) and State House District 26 (0.1%).

60,789residents (2020 Census)
295.7 sq miland area
2cities and towns
1congressional district
31voting precincts

See it on the mapAll of Idaho

City and county

City or townShare of ZIP residents
Twin Falls85%
Hollister0.4%

CountyShare of ZIP residents
Twin Falls County100%
Jerome County0.1%

Town or county subdivisionShare of ZIP residents
Twin Falls CCD97%
Hollister CCD2.2%
Filer CCD0.7%
Kimberly CCD0.2%
Jerome CCD0.1%

Congressional district

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

State legislative districts

State senate districtShare of ZIP residents
State Senate District 2588%
State Senate District 2412%
State Senate District 260.1%

State house districtShare of ZIP residents
State House District 2588%
State House District 2412%
State House District 260.1%

Voting precincts

31 voting precincts overlap ZIP 83301. 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:83301")

ZIP 83301 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.