Zip Code 55309
Big Lake, Minnesota — Sherburne County
📍 ZIP code 55309 is in Big Lake, Sherburne County, Minnesota.
ZIP code 55309 is located in Big Lake, Sherburne County, Minnesota. It is a zip code in the Central (CST/CDT) Time Zone with an estimated population of 21,406. The area code for ZIP code 55309 is 612.
Quick Answer
Zip code 55309 is in Big Lake, Minnesota (Sherburne County). It has a population of 21,406, median household income of $118,387, and median home value of $335,500.
Population
21,406
Income
$118,387
Home Value
$335,500
Climate
83°F / 4°F
About Zip Code 55309
Zip code 55309 is located in Big Lake, Minnesota, within Sherburne County. Home to approximately 21,406 residents, this area sits at an elevation of 925 ft and falls within the Central (CST/CDT) timezone. The local area code is 612.
The median household income is $118,387 per year, which is above the national median of $70,784. Homes in this zip code have a median value of $335,500, and the cost of living index is 125 (25% above the national average of 100).
Summers average a high of 83°F while winters drop to 4°F. The area receives about 33 in of rain and 36 in of snow annually. The zip code covers 65.6 square miles of land area and 3.6 square miles of water.
Key Statistics
21,406
$118,387
$335,500
Central (CST/CDT)
612
925 ft
65.6 sq mi
36.3
7,541
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Compare With Nearby Zip Codes
| Metric | 55309 | 55308 | 55362 | 55398 | 55330 | 55301 |
|---|---|---|---|---|---|---|
| City | Big Lake, MN | Becker, MN | Monticello, MN | Zimmerman, MN | Elk River, MN | Albertville, MN |
| Population | 21,406 | 9,788 | 20,125 | 17,768 | 45,080 | 13,485 |
| Median Income | $118,387 | $103,815 | $92,870 | $105,063 | $111,481 | $131,157 |
| Home Value | $335,500 | $304,200 | $324,400 | $325,000 | $355,200 | $324,000 |
| Cost of Living | 125 | 115 | 113 | 120 | 128 | 128 |
| Median Age | 36.3 | 35.8 | 35.1 | 35.1 | 37.7 | 33.7 |
Cost of Living
100 = National Average. Big Lake's cost of living is 25% above the national average.
vs. State Avg
Above
Affordability
Expensive
Income-to-Home
2.8x
Demographics
Zip code 55309 has a population of 21,406 people with a median age of 36.3. There are 7,541 housing units in this area.
Racial & Ethnic Composition
Source: U.S. Census Bureau American Community Survey estimates.
Population History
Big Lake (55309) population trend from 2010 to 2024
↑ 196.5%Source: U.S. Census Bureau estimates and American Community Survey data.
Climate & Weather
83°F
4°F
33 in
36 in
Big Lake experiences warm summers with average highs around 83°F. Winters are cold with lows averaging 4°F. With 36 in of annual snowfall, residents should be prepared for significant winter weather.
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Housing & Economy
Median Home Value
$335,500
Median Household Income
$118,387
With 7,541 housing units across 65.6 square miles, 55309 has a housing density of 115 units per square mile. The home price-to-income ratio is 2.8x.
Location & Geography
Latitude
45.3777°
Longitude
-93.7443°
Land Area
65.6 sq mi
Water Area
3.6 sq mi
Nearby Zip Codes
Zip codes closest to 55309 (Big Lake, MN) with distances:
Related Cities in Minnesota
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ZIP Codes with Similar Income Nationwide
The five U.S. ZIP codes whose median household income is closest to 55309's $118,387. A way to compare Big Lake to economically similar communities elsewhere in the country.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
ZIP Codes with Similar Demographics
The five U.S. ZIP codes whose racial and ethnic composition most closely matches 55309 (Big Lake, MN). Similarity is measured by cosine distance on the five-category ACS demographic vector.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
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People Also Ask
What zip code is Big Lake, Minnesota?
Big Lake, Minnesota uses zip code 55309.
What county is zip code 55309 in?
Zip code 55309 is located in Sherburne County, Minnesota.
What is the population of zip code 55309?
The population of zip code 55309 is 21,406 with a median age of 36.3.
Is 55309 in Big Lake, Minnesota?
Yes, zip code 55309 is in Big Lake, Sherburne County, Minnesota. The area code is 612.
Frequently Asked Questions
What city is zip code 55309 in?
Zip code 55309 is in Big Lake, Minnesota. It is part of Sherburne County and uses the Central (CST/CDT) timezone.
What is zip code 55309?
Zip code 55309 is a U.S. postal code in Big Lake, Minnesota (Sherburne County). It has a population of 21,406 and covers 65.6 square miles.
What is the population of zip code 55309?
The population of zip code 55309 (Big Lake, MN) is 21,406 with a median age of 36.3. There are approximately 7,541 housing units in this area.
What is the median income in zip code 55309?
The median household income in zip code 55309 (Big Lake, MN) is $118,387 per year. The cost of living index is 125 (100 = national average).
What is the average home price in zip code 55309?
The median home value in zip code 55309 (Big Lake, MN) is $335,500. The cost of living index is 125 compared to the national average of 100.
What county is zip code 55309 in?
Zip code 55309 is located in Sherburne County, Minnesota. The primary city is Big Lake.
What is the area code for zip code 55309?
Zip code 55309 in Big Lake, MN uses area code 612. It is located in the Central (CST/CDT) timezone.
Is zip code 55309 a good place to live?
Zip code 55309 (Big Lake, MN) has a cost of living index of 125 (100 = national average), a median household income of $118,387, and median home values of $335,500. The median age is 36.3. Visit the full page for demographics, climate, and nearby zip code comparisons.
What is the cost of living in zip code 55309?
The cost of living index for zip code 55309 (Big Lake, MN) is 125, where 100 represents the national average. This area is above the national average. Median home value: $335,500.
What schools serve zip code 55309?
Zip code 55309 in Big Lake, Minnesota is served by the local school district of Sherburne County. For specific school information, check your state's department of education or GreatSchools.org.
All demographic data on this page is sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code boundary and delivery data is sourced from the United States Postal Service (USPS). Data is updated periodically and may not reflect the most current figures. Census Bureau ZIP Code Tabulation Areas (ZCTAs) may differ slightly from USPS ZIP code boundaries.
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Data Sources
- Population, income, housing, age, and demographics
- U.S. Census Bureau, American Community Survey 5-Year Estimates, 2019-2023 vintage.
- ZIP to city and county mapping
- USPS and HUD-USPS ZIP-County Crosswalk.
- Time zones and area codes
- IANA tz database and NANPA.
- Elevation
- U.S. Geological Survey National Elevation Dataset (NED), via the USGS Elevation Point Query Service. Mapped to each ZCTA centroid coordinates. Last refreshed 2026-05-19.
- Last refreshed
- 2026-05-18.