🇺🇸 United States ZIP Code

STANDARD

55803

Duluth

ZIP Code 55803 is a standard zip code serving Duluth, Duluth, Minnesota (MN), in St. Louis County, United States. It has an estimated population of 17,431 with a median household income of $68,704. The area falls within the America/Chicago timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: Minnesota (MN)
County: St. Louis
City: Duluth
Timezone: America/Chicago

Coordinates

Latitude: 46.874900
Longitude: -92.094100

Geographic Details

Land Area: 335.01 mi²
Water Area: 29.84 mi²
Population Density: 52.0 people per mi² (40th percentile)
Bounding Box: 47.256600°N, 46.815820°S, -91.791730°E, -92.352704°W

With 17,431 residents spread across 335.01 square miles, this area has a population density of 52.0 people per square mile.

Demographics

17,431

Population

75th percentile

$68,704

Median Income

80th percentile

$197,800

Median Home Value

70th percentile

335.01 mi²

Land Area

The median household income in 55803 is $68,704, and the median home value is $197,800. This places the area in the top 25% nationally for household income.

Housing

8,146

Total Units

6,913

Occupied Units

84.9%

Occupancy Rate

Nearby ZIP Codes

Other zip codes in Duluth, MN.

55801

Duluth

55802

Duluth

55804

Duluth

55805

Duluth

55806

Duluth

55807

Duluth

55808

Duluth

55810

Duluth

55811

Duluth

55812

Duluth

Similar ZIP Codes in Minnesota

ZIP codes with similar median household income in Minnesota.

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

55033

Hastings

$69,230

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.