ZIP Code 56137 — Heron Lake, MN
56137 is a standard (street delivery) ZIP code serving Heron Lake, Minnesota, in Jackson County. To mail something here you only need these five digits — but the four-digit extension narrows delivery to a single point, and it is what USPS bulk postage discounts are priced on.
ZIP code 56137 at a glance
| ZIP code | 56137 |
|---|---|
| Primary city | Heron Lake |
| State | Minnesota (MN) |
| County | Jackson FIPS 27063 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 1,039 |
| Coordinates | 43.832460, -95.324240 |
How ZIP+4 works in 56137
The four digits after the hyphen encode a delivery segment inside 56137. In practice one segment usually means:
- One side of one block — odd numbers on a street between two cross streets
- A single large building, or one floor of it
- A group of PO boxes, sometimes a single box
- A single business that receives enough mail to warrant its own code
That is why 56137 has no single ZIP+4: two neighbors across the street from each other usually have different ones. Enter a street address above and we will return the exact nine-digit code along with the standardized USPS address format.
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 56137.
| ZIP | City | Distance |
|---|---|---|
| 56161 | Okabena, MN | 8.7 mi |
| 56101 | Windom, MN | 9.8 mi |
| 56119 | Brewster, MN | 11 mi |
| 56131 | Fulda, MN | 12.5 mi |
| 56174 | Storden, MN | 12.7 mi |
| 56150 | Lakefield, MN | 14.7 mi |
| 56183 | Westbrook, MN | 14.8 mi |
| 56118 | Bingham Lake, MN | 16.1 mi |
| 56114 | Avoca, MN | 16.8 mi |
| 56145 | Jeffers, MN | 17.1 mi |
| 56125 | Dovray, MN | 18.9 mi |
| 56187 | Worthington, MN | 19.4 mi |
Questions about 56137
What is the ZIP+4 code for 56137?
56137 is the five-digit ZIP code. The ZIP+4 adds four more digits that identify a specific delivery point — usually one side of a city block, a single building, or a group of PO boxes. Because those four digits change from address to address within 56137, you need to look up a specific street address to get them.
What city is 56137?
56137 is assigned to Heron Lake, Minnesota, in Jackson County.
Do I need to use the ZIP+4?
It is optional for ordinary mail, but it speeds up sorting and it is required for most USPS bulk-mail postage discounts. Many address-verification and e-commerce systems also use ZIP+4 to confirm a delivery point exists.
Need thousands of these?
Upload a CSV and get ZIP+4, county, carrier route, and delivery-point data appended to every row — or call the API directly.