Boundary Atlas

ZIP code 97877: Sumpter, OR

ZIP code 97877 is in Sumpter (66% of residents) and Granite (10%), in Baker County (78%) and Grant County (22%), Oregon. 23% of its residents live outside city limits. It is in Oregon's 2nd congressional district. Its state senate district is State Senate District 30; its state house district is State House District 60.

307residents (2020 Census)
199.6 sq miland area
3cities and towns
1congressional district
0voting precincts

See it on the mapAll of Oregon

City and county

City or townShare of ZIP residents
Sumpter66%
Granite10%
Greenhorn1.0%

CountyShare of ZIP residents
Baker County78%
Grant County22%

Town or county subdivisionShare of ZIP residents
Hereford CCD78%
Prairie City CCD22%

Congressional district

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

State legislative districts

State senate districtShare of ZIP residents
State Senate District 30100%

State house districtShare of ZIP residents
State House District 60100%

Voting precincts

0 voting precincts overlap ZIP 97877. 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:97877")

ZIP 97877 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.