Boundary Atlas

ZIP code 57601: Mobridge, SD

ZIP code 57601 is in Mobridge (85% of residents), in Walworth County (95%), Dewey County (4.3%) and Corson County (0.7%), South Dakota. 15% 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 23 (95%) and State Senate District 28 (4.9%); its state house districts are State House District 23 (95%) and State House District 28A (4.9%).

3,824residents (2020 Census)
423.6 sq miland area
1cities and towns
1congressional district
9voting precincts

See it on the mapAll of South Dakota

City and county

City or townShare of ZIP residents
Mobridge85%

CountyShare of ZIP residents
Walworth County95%
Dewey County4.3%
Corson County0.7%

Town or county subdivisionShare of ZIP residents
Mobridge city85%
West Walworth UT9.8%
South Dewey UT2.6%
North Dewey UT1.6%
Ridgeland township0.6%
East Corson UT<0.1%

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 23)Mark Lapka (R)95%
State Senator (State Senate District 28)Sam Marty (R)4.9%
State Representative (State House District 23)Scott Moore (R)95%
State Representative (State House District 23)Spencer Gosch (R)95%
State Representative (State House District 28A)Jana Hunt (R)4.9%

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 2395%
State Senate District 284.9%

State house districtShare of ZIP residents
State House District 2395%
State House District 28A4.9%

Voting precincts

9 voting precincts overlap ZIP 57601. Map them, with each precinct's share of the ZIP's residents.

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ZIP 57601 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.