Boundary Atlas

ZIP code 57714: Allen, SD

ZIP code 57714 is in Allen (61% of residents), in Bennett County (99%) and Jackson County (0.8%), South Dakota. 39% 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 27; its state house district is State House District 27.

749residents (2020 Census)
162.1 sq miland area
1cities and towns
1congressional district
3voting precincts

See it on the mapAll of South Dakota

City and county

City or townShare of ZIP residents
Allen61%

CountyShare of ZIP residents
Bennett County99%
Jackson County0.8%

Town or county subdivisionShare of ZIP residents
West Bennett UT99%
Southwest Jackson UT0.8%

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 27100%

State house districtShare of ZIP residents
State House District 27100%

Voting precincts

3 voting precincts overlap ZIP 57714. 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:57714")

ZIP 57714 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.