ZIP code · Big Lake · Minnesota · United States
ZIP code 55309 — Big Lake
ZIP code 55309 serves Big Lake, Minnesota.
- Postal code
- 55309Single source Value from one source, not cross-checked.
- City
- Big Lake
- County
- Sherburne FIPS 27141
- State
- Minnesota
- Country
- United States
- Coordinates
- 45.3506, -93.7399 — precision precise (locality)
View on OpenStreetMap - Population
- 21,406 (ZCTA, ACS 5-year)
- Population density
- 344 / sq mi
- Land area
- 62.3 sq mi (161.4 km²) (ZCTA, ACS 5-year)
- Median household income
- $118,387
- Per-capita income
- $47,896
- Median age
- 36.3
- Households
- 7,242
- Housing units
- 7,541
- Median home value
- $335,500
- Median gross rent
- $1,463 / month
- Congressional district
- MN-6 (119th Congress)
- USDA hardiness zone
- 4b (-25 to -20 °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
- 763Telephone 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 55309 with another ZIP · ZIPs within 25 miles · distance from 55309
Map of ZIP code 55309
Climate — monthly normals
Warmest month Jul (avg high 83°F), coldest Jan (avg low 4°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 23 | 28 | 41 | 56 | 69 | 79 | 83 | 81 | 73 | 58 | 41 | 27 |
| Avg low °F | 4 | 7 | 18 | 32 | 45 | 56 | 61 | 58 | 49 | 36 | 24 | 11 |
| Precip in | 0.8 | 0.8 | 1.7 | 3.0 | 4.2 | 4.5 | 4.5 | 4.0 | 3.6 | 3.0 | 1.7 | 1.1 |
NOAA 1991–2020 climate normals from the nearest station: ELK RVR (8.2 mi) · NOAA NCEI
Places in ZIP 55309
- 3 schools
- 1 hospitals & clinics
- 1 supermarkets
- 8 restaurants & cafés
- 2 bars & pubs
- 15 parks
- 6 playgrounds
- 1 libraries
- 1 post offices
- 4 places of worship
- 3 banks
- 7 gas stations
- 3 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