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Zip Code 55121 — Saint Paul, MN

55121 is a ZIP Code associated with Saint Paul, MN, located within Dakota. 55121 ranks #14 out of 19 ZIP codes in Dakota County by population (and #181 out of 881 in MN). The area supports an estimated population of 9,198 residents across Data Pending housing units, with a population density of 369.5 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (44.845910, -93.159320)

Data MetricLocal Statistic
Postal / Zip Code55121
Primary CitySaint Paul
State / ProvinceMN
CountyDakota
Total Population9,198
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density369.5 people/sq mi
TimezoneAmerica/Chicago

How 55121 Compares

MetricZIP 55121Dakota CountyMN State Average
Population9,198447,813 (Total)5,739,754 (Total)
Average ZIP IncomeData PendingN/AN/A
Population Density369.5 /sq mi----
County Pop Rank#14 of 19----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 55120Saint Paul1.9 mi5,058N/A
Zip 55150Mendota2.9 mi201N/A
Zip 55123Saint Paul3.1 mi26,501N/A
Zip 55111Saint Paul3.2 mi233N/A
Zip 55122Saint Paul3.5 mi32,261N/A

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →