ZIP Code 55010

55010 is one of Minnesota's ZIP codes, delivering to addresses in Castle Rock, Dakota County.

City: Castle Rock
County: Dakota County
State: Minnesota
Prefix: 550xx

Where this code sits

55010 is part of the 550xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Castle Rock.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 55010 delivers to without sharing its boundary.

ZIP codes nearest 55010

The ZIP codes whose reference points sit closest to 55010.
ZIP code	Distance	Delivers to
ZIP code 55057	6.2 mi	Northfield, MN
ZIP code 55065	6.7 mi	Randolph, MN
ZIP code 55024	8.0 mi	Farmington, MN
ZIP code 55020	8.6 mi	Elko New Market, MN
ZIP code 55054	8.6 mi	Elko New Market, MN
ZIP code 55044	10 mi	Lakeville, MN
ZIP code 55019	11 mi	Dundas, MN
ZIP code 55031	11 mi	Hampton, 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 55010, plotted from its record coordinates.

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

Scope ZIP code 55010. 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.