Boundary Atlas

ZIP code 57045: Menno, SD

ZIP code 57045 is in Menno (59% of residents), in Hutchinson County (89%), Yankton County (10%) and Turner County (0.6%), South Dakota. 41% 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 19 (90%) and State Senate District 18 (10%); its state house districts are State House District 19 (90%) and State House District 18 (10%).

1,042residents (2020 Census)
120.8 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
Menno59%

CountyShare of ZIP residents
Hutchinson County89%
Yankton County10%
Turner County0.6%

Town or county subdivisionShare of ZIP residents
Menno city59%
Sweet township11%
Molan township10%
Kassel township7.5%
Jamesville township6.8%
West Yankton UT2.5%
Capital township1.9%
Mayfield township1.0%
Salem township0.6%

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 19)Kyle Schoenfish (R)90%
State Senator (State Senate District 18)Lauren Nelson (R)10%
State Representative (State House District 19)Drew Peterson (R)90%
State Representative (State House District 19)Jessica Bahmuller (R)90%
State Representative (State House District 18)Julie Auch (R)10%
State Representative (State House District 18)Mike Stevens (R)10%

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 1990%
State Senate District 1810%

State house districtShare of ZIP residents
State House District 1990%
State House District 1810%

Voting precincts

4 voting precincts overlap ZIP 57045. Map them, with each precinct's share of the ZIP's residents.

Get this in your AI agent

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:57045")

ZIP 57045 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.