Boundary Atlas

ZIP code 57747: Hot Springs, SD

ZIP code 57747 is in Hot Springs (60% of residents) and Angostura (2.8%), in Fall River County (92%) and Custer County (7.9%), South Dakota. 38% of its residents live outside city limits. It is in South Dakota's at-large congressional district. Its state senate district is State Senate District 30; its state house district is State House District 30.

5,695residents (2020 Census)
508.3 sq miland area
3cities and towns
1congressional district
10voting precincts

See it on the mapAll of South Dakota

City and county

City or townShare of ZIP residents
Hot Springs60%
Angostura2.8%
Maverick Junction0.8%

CountyShare of ZIP residents
Fall River County92%
Custer County7.9%

Town or county subdivisionShare of ZIP residents
Hot Springs city60%
Northeast Fall River UT32%
West Custer UT6.9%
East Custer UT1.0%
Southwest Fall River UT0.2%

Congressional district

Congressional districtShare of ZIP residents
South Dakota's at-large congressional district (SD-AL)100%

State legislative districts

State senate districtShare of ZIP residents
State Senate District 30100%

State house districtShare of ZIP residents
State House District 30100%

Voting precincts

10 voting precincts overlap ZIP 57747. 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:57747")

ZIP 57747 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.