Boundary Atlas

ZIP code 57330: Delmont, SD

ZIP code 57330 is in Delmont (32% of residents), Clearfield Colony (21%) and Greenwood Colony (2.3%), in Douglas County (63%), Charles Mix County (33%) and Hutchinson County (4.2%), South Dakota. 45% 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 21 (96%) and State Senate District 19 (4.2%); its state house districts are State House District 21 (96%) and State House District 19 (4.2%).

479residents (2020 Census)
116.0 sq miland area
3cities and towns
1congressional district
5voting precincts

See it on the mapAll of South Dakota

City and county

City or townShare of ZIP residents
Delmont32%
Clearfield Colony21%
Greenwood Colony2.3%

CountyShare of ZIP residents
Douglas County63%
Charles Mix County33%
Hutchinson County4.2%

Town or county subdivisionShare of ZIP residents
Choteau Creek township33%
Delmont city32%
Belmont township14%
East Choteau township8.1%
Lincoln township5.6%
Independence township2.7%
Kulm township1.9%
Susquehanna township1.5%
Oak Hollow township0.8%
Kennedy townshipland only

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 21)MyKala Voita (R)96%
State Senator (State Senate District 19)Kyle Schoenfish (R)4.2%
State Representative (State House District 21)Jim Halverson (R)96%
State Representative (State House District 21)Marty Overweg (R)96%
State Representative (State House District 19)Drew Peterson (R)4.2%
State Representative (State House District 19)Jessica Bahmuller (R)4.2%

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 2196%
State Senate District 194.2%

State house districtShare of ZIP residents
State House District 2196%
State House District 194.2%

Voting precincts

5 voting precincts overlap ZIP 57330. Map them, with each precinct's share of the ZIP's residents.

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ZIP 57330 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.