Boundary Atlas

ZIP code 57325: Chamberlain, SD

ZIP code 57325 is in Chamberlain (75% of residents), in Brule County (95%) and Buffalo County (5.4%), South Dakota. 25% 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 26; its state house district is State House District 26B.

3,279residents (2020 Census)
286.4 sq miland area
2cities and towns
1congressional district
7voting precincts

See it on the mapAll of South Dakota

City and county

City or townShare of ZIP residents
Chamberlain75%
Ola0.5%

CountyShare of ZIP residents
Brule County95%
Buffalo County5.4%

Town or county subdivisionShare of ZIP residents
Chamberlain city75%
Chamberlain township7.4%
Crow Creek UT5.4%
Brule township5.0%
Pukwana township2.4%
West Point township2.0%
America township1.1%
Ola township1.1%
Grandview UT0.2%
Red Lake 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 26)Tamara Grove (R)100%
State Representative (State House District 26B)Rebecca Reimer (R)100%

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 26100%

State house districtShare of ZIP residents
State House District 26B100%

Voting precincts

7 voting precincts overlap ZIP 57325. Map them, with each precinct's share of the ZIP's residents.

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ZIP 57325 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.