Boundary Atlas

ZIP code 57544: Kennebec, SD

ZIP code 57544 is in Kennebec (70% of residents), in Lyman County (98%) and Tripp County (2.5%), South Dakota. 30% 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 26 (98%) and State Senate District 21 (2.5%); its state house districts are State House District 26B (98%) and State House District 21 (2.5%).

400residents (2020 Census)
252.0 sq miland area
1cities and towns
1congressional district
3voting precincts

See it on the mapAll of South Dakota

City and county

City or townShare of ZIP residents
Kennebec70%

CountyShare of ZIP residents
Lyman County98%
Tripp County2.5%

Town or county subdivisionShare of ZIP residents
Kennebec town70%
Central Lyman UT23%
Lower Brule UT4.2%
Gassman UT2.5%
Rex 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)98%
State Senator (State Senate District 21)MyKala Voita (R)2.5%
State Representative (State House District 26B)Rebecca Reimer (R)98%
State Representative (State House District 21)Jim Halverson (R)2.5%
State Representative (State House District 21)Marty Overweg (R)2.5%

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 2698%
State Senate District 212.5%

State house districtShare of ZIP residents
State House District 26B98%
State House District 212.5%

Voting precincts

3 voting precincts overlap ZIP 57544. Map them, with each precinct's share of the ZIP's residents.

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ZIP 57544 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.