🇺🇸 United States ZIP Code

STANDARD

55121

Saint Paul

ZIP Code 55121 is a standard zip code serving Saint Paul, Saint Paul, Minnesota (MN), in Dakota County, United States. It has an estimated population of 7,861 with a median household income of $64,385. The area falls within the America/Chicago timezone.

On this page

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: Minnesota (MN)
County: Dakota
City: Saint Paul
Timezone: America/Chicago

Coordinates

Latitude: 44.847100
Longitude: -93.154300

Geographic Details

Land Area: 9.03 mi²
Water Area: 0.75 mi²
Population Density: 870.0 people per mi² (75th percentile)
Bounding Box: 44.862930°N, 44.827909°S, -93.104812°E, -93.207756°W

With 7,861 residents spread across 9.03 square miles, this area has a population density of 870.0 people per square mile.

Demographics

7,861

Population

65th percentile

$64,385

Median Income

75th percentile

$198,400

Median Home Value

70th percentile

9.03 mi²

Land Area

The median household income in 55121 is $64,385, and the median home value is $198,400. This places the area in the top 25% nationally for household income.

Housing

3,816

Total Units

3,516

Occupied Units

92.1%

Occupancy Rate

Nearby ZIP Codes

Other zip codes in Saint Paul, MN.

55101

Saint Paul

55102

Saint Paul

55103

Saint Paul

55104

Saint Paul

55105

Saint Paul

55106

Saint Paul

55107

Saint Paul

55108

Saint Paul

55109

Saint Paul

55110

Saint Paul

Similar ZIP Codes in Minnesota

ZIP codes with similar median household income in Minnesota.

55003

Bayport

$55,175

55009

Cannon Falls

$60,929

55012

Center City

$73,125

55013

Chisago City

$67,024

55019

Dundas

$70,104

55025

Forest Lake

$72,222

55027

Goodhue

$67,464

55032

Harris

$66,146

Frequently Asked Questions

What information is available for each ZIP code?

Each ZIP code page shows city, state, county, geographic coordinates, timezone, population, median household income, median home value, housing units, land area, population density, commute time, educational attainment, area codes, and ZIP code type (Standard, PO Box, or Unique).

What are the different types of ZIP codes?

There are three types of ZIP codes: Standard (residential and commercial delivery areas), PO Box (assigned to post office box sections), and Unique (assigned to a single high-volume address like a government agency or large company). Standard ZIP codes are the most common.

How often is ZIP code data updated?

ZIP code assignments are updated quarterly by the USPS. Demographic data comes from the US Census Bureau's American Community Survey (ACS), which releases new 5-year estimates annually. ZipFYI updates its data to reflect the latest available information.

What is population density and why does it matter?

Population density measures the number of people per square mile in a ZIP code area. It helps identify urban vs. rural areas, affects real estate values, impacts service availability, and is used in market analysis. Dense urban ZIP codes may have 50,000+ people per square mile.

How are ZIP code boundaries determined?

ZIP code boundaries are determined by the USPS based on mail delivery routes, not political or geographic boundaries. They follow carrier routes and may cross city, county, or even state lines. Boundaries can change when the USPS reorganizes delivery operations.

What does median household income tell me about a ZIP code?

Median household income is the middle value when all household incomes in a ZIP code are sorted. Half of households earn more and half earn less. It is a better indicator of typical earnings than average income, which can be skewed by very high or very low outliers.