Boundary Atlas

ZIP code 57321: Canova, SD

ZIP code 57321 is in Canova (23% of residents), in Miner County (74%), Hanson County (15%) and McCook County (11%), South Dakota. 77% of its residents live outside city limits. It is in South Dakota's at-large congressional district. Its state senate districts are State Senate District 8 (74%) and State Senate District 19 (26%); its state house districts are State House District 8 (74%) and State House District 19 (26%).

384residents (2020 Census)
108.9 sq miland area
1cities and towns
1congressional district
5voting precincts

See it on the mapAll of South Dakota

City and county

City or townShare of ZIP residents
Canova23%

CountyShare of ZIP residents
Miner County74%
Hanson County15%
McCook County11%

Town or county subdivisionShare of ZIP residents
Canova town23%
Rock Creek township18%
Canova township17%
Vermillion township16%
Spring Lake township15%
Sun Prairie township5.7%
Pearl township5.2%
Beaver townshipland only

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 874%
State Senate District 1926%
State Senate District 20land only

State house districtShare of ZIP residents
State House District 874%
State House District 1926%
State House District 20land only

Voting precincts

5 voting precincts overlap ZIP 57321. 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:57321")

ZIP 57321 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.