ZIP code · Heron Lake · Minnesota · United States
ZIP code 56137 — Heron Lake
ZIP code 56137 serves Heron Lake, Minnesota.
- Postal code
- 56137Single source Value from one source, not cross-checked.
- City
- Heron Lake
- County
- Jackson FIPS 27063
- State
- Minnesota
- Country
- United States
- Coordinates
- 43.7979, -95.3267 — precision precise (locality)
View on OpenStreetMap - Population
- 1,091 (ZCTA, ACS 5-year)
- Population density
- 10 / sq mi
- Land area
- 112.9 sq mi (292.4 km²) (ZCTA, ACS 5-year)
- Median household income
- $68,500
- Per-capita income
- $36,284
- Median age
- 42.4
- Households
- 464
- Housing units
- 515
- Median home value
- $114,400
- Median gross rent
- $738 / month
- Congressional districts
- MN-1 (also MN-7) (119th Congress)
- USDA hardiness zone
- 5a (-20 to -15 °F)Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
- Time zone
- America/Chicago (UTC−6 / UTC−5 DST)
- Area code
- 507Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.
Tools: compare 56137 with another ZIP · ZIPs within 25 miles · distance from 56137
Map of ZIP code 56137
Climate — monthly normals
Warmest month Jul (avg high 81°F), coldest Jan (avg low 5°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 22 | 27 | 39 | 55 | 68 | 78 | 81 | 79 | 73 | 59 | 42 | 28 |
| Avg low °F | 5 | 8 | 21 | 33 | 46 | 57 | 60 | 58 | 49 | 36 | 23 | 11 |
| Precip in | 0.6 | 0.7 | 1.5 | 3.0 | 4.5 | 4.5 | 4.2 | 4.1 | 3.1 | 2.3 | 1.2 | 0.8 |
NOAA 1991–2020 climate normals from the nearest station: LAKEFIELD 2NE (10.9 mi) · NOAA NCEI
Places in ZIP 56137
- 1 schools
- 2 restaurants & cafés
- 3 parks
- 2 playgrounds
- 1 libraries
- 1 post offices
- 2 places of worship
- 2 gas stations
- 2 police & fire stations
Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology
About this page
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page