ZIP Code 55121

55121 is one of Minnesota's ZIP codes, delivering to addresses in Saint Paul, Dakota County.

City: Saint Paul
County: Dakota County
State: Minnesota
Prefix: 551xx

Where this code sits

55121 is part of the 551xx range, the group of codes handled by one mail processing centre. Saint Paul is served by 43 ZIP codes in total.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 55121 delivers to without sharing its boundary.

ZIP codes nearest 55121

The ZIP codes whose reference points sit closest to 55121.
ZIP code	Distance	Delivers to
ZIP code 55120	1.7 mi	Saint Paul, MN
ZIP code 55150	2.7 mi	Mendota, MN
ZIP code 55123	2.9 mi	Saint Paul, MN
ZIP code 55077	3.2 mi	Inver Grove Heights, MN
ZIP code 55111	3.4 mi	Saint Paul, MN
ZIP code 55450	4.0 mi	Minneapolis, MN
ZIP code 55425	4.0 mi	Minneapolis, MN
ZIP code 55118	4.2 mi	Saint Paul, 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 55121, plotted from its record coordinates.

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

Scope ZIP code 55121. 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.