ZIP code · Isanti · Minnesota · United States

ZIP code 55040 — Isanti

ZIP code 55040 serves Isanti, Minnesota.

Postal code
55040
Single source Value from one source, not cross-checked.
City
Isanti
County
Isanti FIPS 27059
State
Minnesota
Country
United States
Coordinates
45.4682, -93.2266 — precision precise (locality)
View on OpenStreetMap
Population
14,451 (ZCTA, ACS 5-year)
Population density
147 / sq mi
Land area
98.1 sq mi (254 km²) (ZCTA, ACS 5-year)
Median household income
$88,576
Per-capita income
$39,665
Median age
37.5
Households
5,258
Housing units
5,635
Median home value
$287,700
Median gross rent
$1,298 / month
Congressional district
MN-8 (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 codes
763, 612 (from the nearest rate centre)
Telephone 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.

Climate — monthly normals

Warmest month Jul (avg high 82°F), coldest Jan (avg low 4°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F222740566977828072584127
Avg low °F4720344657615850372511
Precip in0.70.71.42.73.64.24.23.63.12.81.61.0

NOAA 1991–2020 climate normals from the nearest station: CAMBRIDGE (6.1 mi) · NOAA NCEI

Places in ZIP 55040

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