Boundary Atlas

ZIP code 57536: Harrold, SD

ZIP code 57536 is in Harrold (20% of residents), in Hughes County (91%) and Sully County (8.6%), South Dakota. 80% 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 24 (61%) and State Senate District 26 (39%); its state house districts are State House District 24 (61%) and State House District 26B (39%).

510residents (2020 Census)
411.9 sq miland area
1cities and towns
1congressional district
4voting precincts

See it on the mapAll of South Dakota

City and county

City or townShare of ZIP residents
Harrold20%

CountyShare of ZIP residents
Hughes County91%
Sully County8.6%

Town or county subdivisionShare of ZIP residents
Crow Creek UT39%
North Hughes UT27%
Harrold town20%
East Sully UT8.6%
Raber township4.7%

Congressional district

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

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (SD-AL)Dusty Johnson (R)202-225-2801100%
U.S. SenatorJohn Thune (R)202-224-2321 · contact formstatewide
U.S. SenatorMike Rounds (R)202-224-5842 · contact formstatewide
State Senator (State Senate District 24)Jim Mehlhaff (R)61%
State Senator (State Senate District 26)Tamara Grove (R)39%
State Representative (State House District 24)Mike Weisgram (R)61%
State Representative (State House District 24)Will Mortenson (R)61%
State Representative (State House District 26B)Rebecca Reimer (R)39%

Officials serving now (members of Congress until January 3, 2027). Sources: State legislators: Open States (public domain); Members of Congress: the @unitedstates project, congress-legislators (CC0).

Local government

State legislative districts

State senate districtShare of ZIP residents
State Senate District 2461%
State Senate District 2639%

State house districtShare of ZIP residents
State House District 2461%
State House District 26B39%

Voting precincts

4 voting precincts overlap ZIP 57536. 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:57536")

ZIP 57536 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.