ZIP Code 55040

55040 is one of Minnesota's ZIP codes, delivering to addresses in Isanti, Isanti County.

City: Isanti
County: Isanti County
State: Minnesota
Prefix: 550xx

Where this code sits

55040 is part of the 550xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Isanti.

Isanti Minnesota ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 55040 delivers to without sharing its boundary.

763 Area code 763

ZIP codes nearest 55040

The ZIP codes whose reference points sit closest to 55040.
ZIP code	Distance	Delivers to
ZIP code 55005	5.5 mi	Bethel, MN
ZIP code 55008	6.9 mi	Cambridge, MN
ZIP code 55070	8.4 mi	Saint Francis, MN
ZIP code 55011	8.8 mi	Cedar, MN
ZIP code 55079	11 mi	Stacy, MN
ZIP code 55029	12 mi	Grandy, MN
ZIP code 55056	12 mi	North Branch, MN
ZIP code 55078	13 mi	Stacy, MN

Straight-line distance between place reference points, not driving distance. Where a place has no Census Gazetteer point, its postal centroid is used instead.

Each point is the reference point for 55040, plotted from its record coordinates.

Reference points and footprint
Not an official NANPA boundary
Not a USPS delivery area

Scope ZIP code 55040. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated 15 July 2026. A ZIP code is a set of delivery routes, not an area; the point shown is a record coordinate, not a centre.