ZIP code 56137: Heron Lake, MN
ZIP code 56137 is in Heron Lake (57% of residents), in Jackson County (87%) and Cottonwood County (13%), Minnesota. 43% of its residents live outside city limits. It is in Minnesota's 1st congressional district (87%) and Minnesota's 7th congressional district (13%). Its state senate district is State Senate District 21; its state house districts are State House District 21B (95%) and State House District 21A (5.4%).
See it on the mapAll of Minnesota
City and county
| City or town | Share of ZIP residents |
|---|---|
| Heron Lake | 57% |
| County | Share of ZIP residents |
|---|---|
| Jackson County | 87% |
| Cottonwood County | 13% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Heron Lake city | 57% |
| Weimer township | 14% |
| La Crosse township | 13% |
| Springfield township | 7.1% |
| Southbrook township | 2.9% |
| Amo township | 2.5% |
| Alba township | 2.0% |
| Delafield township | 1.1% |
| Rose Hill township | land only |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| Minnesota's 1st congressional district (MN-01) | 87% |
| Minnesota's 7th congressional district (MN-07) | 13% |
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 (MN-01) | Brad Finstad (R) | 202-225-2472 | 87% |
| U.S. Representative (MN-07) | Michelle Fischbach (R) | 202-225-2165 | 13% |
| U.S. Senator | Amy Klobuchar (D) | 202-224-3244 · contact form | statewide |
| U.S. Senator | Tina Smith (D) | 202-224-5641 · contact form | statewide |
| State Senator (State Senate District 21) | Bill Weber (R) | 100% | |
| State Representative (State House District 21B) | Marj Fogelman (R) | 95% |
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
- Heron Lake website: http://www.heronlakecity.org/
- Heron Lake laws: search for the Heron Lake, Minnesota code of ordinances
- Jackson County website: http://www.co.jackson.mn.us
- Jackson County laws: search for the Jackson County, Minnesota code of ordinances
- Cottonwood County website: http://www.co.cottonwood.mn.us
- Cottonwood County laws: search for the Cottonwood County, Minnesota code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 21 | 100% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 21B | 95% |
| State House District 21A | 5.4% |
Voting precincts
9 voting precincts overlap ZIP 56137. 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:56137")
ZIP 56137 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.