ZIP Codes of Lake County, MN

Population & People
Population & People
Total Population
10,676
Household Income
Household Income
Median Income
$72,216
Housing
Housing
Total Housing Units
6,614
Business & Economy
Business & Economy
Total Businesses
311
Employment
Employment
Employment Rate
54.28%
Education
Education
Bachelor's Degree+
24.83%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 6 ZIPs in this county.
Data Last Updated: June 1, 2026
ZIP Codes:6 ZIP Codes (4 Standard, 2 PO Box, 0 Unique) [See All]
Area Code:218
Timezone:Central (GMT -06:00)
Local Time:2:12:37 PM
Population:10,676 [See All]
FIPS:27075
Land Area:1,500 sq mi
Water Area:54 sq mi
Coordinates:47.3464, -91.4719
Quick Link:
https://www.zip-codes.com/county/mn-lake.asp
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Minnesota's #65 most populous county
10,676 residents across 6 ZIPs — #65 of 93 Minnesota counties.

Standout ZIPs in this County


Most Populous
Two Harbors · 7,250 people
67.9% of county total
Highest Income
Isabella · $87,857 median
1.2× county average
Largest Land Area
Two Harbors · 479.7 sq mi
Spans the most ground
Fastest Growth
Two Harbors · 2.3% (10-yr)
7,087 → 7,250 residents
Most Educated
Two Harbors · 25.0% bachelor's+
1,308 of 5,226 adults 25+

Things worth knowing about Lake County


10,676 residents live across 6 ZIPs covering 1,500 sq mi, served by 6 distinct USPS-recognized cities.

Population moved from 10,520 to 10,676 from 2014 to 2024 — a +1.5% change. 4 ZIPs gained residents, 2 lost.

The county's wealthiest ZIP 55607 (Isabella, $87,857 median) and poorest ZIP 55601 (Beaver Bay , $56,250) are 30.1 miles apart — a 1.6× income gap across local geography.

Median home values vary 1.4× across this county — from $181,700 in 55614 (Silver Bay) to $259,200 in 55616 (Two Harbors).

Density varies 461× across the county — from 0 people/sq mi in 55607 (Isabella) to 200 in 55609 (Knife River).

Educational attainment ranges from 14.8% bachelor's+ in 55601 (Beaver Bay ) to 48.1% in 55609 (Knife River) — the breadth of educational profiles across the area.

Within Minnesota, this is the #65 most populous of 93 counties and ranks #61 for median household income .

Weighted by population, the typical household earns about $74,739 across the county — reflecting what a typical resident sees, not a simple ZIP average.

24.8% of adults age 25+ hold a bachelor's degree or higher (1,968 of 7,927 reporting).

4 Standard delivery, 2 PO Box only, 0 single-entity Unique ZIPs serve this county.

Stories about Lake County


Big & sparse

A frontier county — vast land area with only a few residents per square mile. Daily life looks very different here than in the country's denser counties.

Total area
1,500
square miles
Avg density
7.1
people per sq mi
Population
10,676
across 6 ZIPs
Two Harbors
479.7 sq mi
7,250 residents
Isabella
443.0 sq mi
192 residents
Finland
349.7 sq mi
490 residents

Single-ZIP anchor

One ZIP holds the majority of this county's population — a sign of a county built around a single city or town.

Two Harbors

All ZIP Codes in Lake County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
55616Two HarborsStandard7,250$76,127479.72.3%
55614Silver BayStandard2,485$72,981227.2-0.3%
55603FinlandStandard490$61,875349.71.4%
55607IsabellaStandard192$87,857443.092.0%
55609Knife RiverPO Box131$78,2080.7-46.3%
55601Beaver BayPO Box128$56,2500.012.3%

Adjacent & Nearby Counties