ZIP Codes of Isanti County, MN

Population & People
Population & People
Total Population
39,270
Household Income
Household Income
Median Income
$80,487
Housing
Housing
Total Housing Units
16,191
Business & Economy
Business & Economy
Total Businesses
923
Employment
Employment
Employment Rate
63.77%
Education
Education
Bachelor's Degree+
20.76%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 6 ZIPs in this county.
Data Last Updated: July 1, 2026
ZIP Codes:6 ZIP Codes (5 Standard, 1 PO Box, 0 Unique) [See All]
Area Codes:320 / 612 / 763
Timezone:Central (GMT -06:00)
Local Time:11:53:55 PM
Population:39,270 [See All]
FIPS:27059
CBSA:Minneapolis-St. Paul-Bloomington, MN-WI
Land Area:387 sq mi
Water Area:11 sq mi
Coordinates:45.6226, -93.2643
Quick Link:
https://www.zip-codes.com/county/mn-isanti.asp
Need Isanti data in your app? Look up ZIP, county, and city data with a single API call.
Try Free
Minnesota's #26 most populous county
39,270 residents across 6 ZIPs — #26 of 93 Minnesota counties.

Standout ZIPs in this County


Most Populous
Cambridge · 16,729 people
42.6% of county total
Highest Income
Stanchfield · $101,964 median
1.3× county average
Largest Land Area
Cambridge · 105.5 sq mi
Spans the most ground
Fastest Growth
Stanchfield · 36.3% (10-yr)
2,333 → 3,180 residents
Most Educated
Stanchfield · 25.2% bachelor's+
563 of 2,238 adults 25+

Things worth knowing about Isanti County


39,270 residents live across 6 ZIPs covering 387 sq mi, served by 6 distinct USPS-recognized cities.

Population moved from 34,929 to 39,270 from 2014 to 2024 — a +12.4% change. 5 ZIPs gained residents, 1 lost.

The county's wealthiest ZIP 55080 (Stanchfield, $101,964 median) and poorest ZIP 55017 (Dalbo, $62,188) are 9.6 miles apart — a 1.6× income gap across local geography.

Median home values vary 1.6× across this county — from $223,200 in 55006 (Braham) to $355,900 in 55080 (Stanchfield).

Density varies across the county — from 26 people/sq mi in 55017 (Dalbo) to 159 in 55008 (Cambridge).

Educational attainment ranges from 13.2% bachelor's+ in 55006 (Braham) to 25.5% in 55017 (Dalbo) — the breadth of educational profiles across the area.

Within Minnesota, this is the #26 most populous of 93 counties and ranks #34 for median household income with the #7 fastest decade growth .

Weighted by population, the typical household earns about $86,436 across the county — reflecting what a typical resident sees, not a simple ZIP average.

20.8% of adults age 25+ hold a bachelor's degree or higher (5,685 of 27,380 reporting).

5 Standard delivery, 1 PO Box only, 0 single-entity Unique ZIPs serve this county.

All ZIP Codes in Isanti County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
55008CambridgeStandard16,729$84,513105.510.9%
55040IsantiStandard14,837$90,900100.816.1%
55006BrahamStandard3,694$69,19180.8-6.9%
55080StanchfieldStandard3,180$101,96468.936.3%
55017DalboStandard799$62,18830.56.0%
55029GrandyPO Box31$74,1670.482.4%

Adjacent & Nearby Counties