ZIP code 83253: Custer County, ID
ZIP code 83253 is in Custer County (51%) and Lemhi County (49%), Idaho, outside any city or Census-designated place. It is in Idaho's 2nd congressional district. Its state senate districts are State Senate District 8 (51%) and State Senate District 31 (49%); its state house districts are State House District 8 (51%) and State House District 31 (49%).
City and county
Outside any city or Census-designated place.
| County | Share of ZIP residents |
|---|---|
| Custer County | 51% |
| Lemhi County | 49% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Challis CCD | 51% |
| Patterson CCD | 49% |
Congressional district
| Congressional district | Share of ZIP residents |
|---|---|
| Idaho's 2nd congressional district (ID-02) | 100% |
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 8 | 51% |
| State Senate District 31 | 49% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 8 | 51% |
| State House District 31 | 49% |
Voting precincts
2 voting precincts overlap ZIP 83253. 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:83253")
ZIP 83253 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.