ZIP code 57030: Garretson, SD
ZIP code 57030 is in Garretson (40% of residents) and Sherman (2.7%), in Minnehaha County (98%) and Rock County (1.6%), South Dakota. 57% of its residents live outside city limits. It is in South Dakota's at-large congressional district (98%) and Minnesota's 1st congressional district (1.6%). Its state senate districts are State Senate District 25 (98%), State Senate District 21 (1.6%) and State Senate District 2 (0.3%); its state house districts are State House District 25 (98%), State House District 21A (1.6%) and State House District 2 (0.3%).
See it on the mapAll of South Dakota
City and county
| City or town | Share of ZIP residents |
|---|---|
| Garretson | 40% |
| Sherman | 2.7% |
| County | Share of ZIP residents |
|---|---|
| Minnehaha County | 98% |
| Rock County | 1.6% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Garretson city | 40% |
| Edison township | 18% |
| Palisade township | 13% |
| Highland township | 6.8% |
| Brandon township | 5.4% |
| Logan township | 4.4% |
| Red Rock township | 3.8% |
| Sverdrup township | 3.3% |
| Sherman town | 2.7% |
| Springwater township | 1.1% |
| Dell Rapids township | 0.6% |
| Beaver Creek township | 0.5% |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| South Dakota's at-large congressional district (SD-AL) | 98% |
| Minnesota's 1st congressional district (MN-01) | 1.6% |
This ZIP is split between districts. A mailing address in it could be in either; the map or locate_point gives the district for an exact address.
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (SD-AL) | Dusty Johnson (R) | 202-225-2801 | 98% |
| U.S. Representative (MN-01) | Brad Finstad (R) | 202-225-2472 | 1.6% |
| U.S. Senator | John Thune (R) | 202-224-2321 · contact form | statewide |
| U.S. Senator | Mike Rounds (R) | 202-224-5842 · contact form | statewide |
| State Senator (State Senate District 25) | Tom Pischke (R) | 98% | |
| State Senator (State Senate District 21) | Bill Weber (R) | 1.6% | |
| State Senator (State Senate District 2) | Steve Kolbeck (R) | 0.3% | |
| State Representative (State House District 25) | Jon Hansen (R) | 98% | |
| State Representative (State House District 25) | Les Heinemann (R) | 98% | |
| State Representative (State House District 2) | David Kull (R) | 0.3% | |
| State Representative (State House District 2) | John Sjaarda (R) | 0.3% |
Elected under MN's previous legislative map; the district's lines changed for 2026.
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
- Garretson website: https://cityofgarretson.com/
- Garretson laws: search for the Garretson, South Dakota code of ordinances
- Sherman website: http://www.shermansd.com/
- Sherman laws: search for the Sherman, South Dakota code of ordinances
- Minnehaha County website: http://www.minnehahacounty.org
- Minnehaha County laws: search for the Minnehaha County, South Dakota code of ordinances
- Rock County website: http://www.co.rock.mn.us
- Rock County laws: search for the Rock County, South Dakota code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 25 | 98% |
| State Senate District 21 | 1.6% |
| State Senate District 2 | 0.3% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 25 | 98% |
| State House District 21A | 1.6% |
| State House District 2 | 0.3% |
Voting precincts
6 voting precincts overlap ZIP 57030. It also crosses into MN. 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:57030")
ZIP 57030 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.