🇺🇸 United States ZIP Code

STANDARD

53221

Milwaukee

ZIP Code 53221 is a standard zip code serving Milwaukee, Milwaukee, Wisconsin (WI), in Milwaukee County, United States. It has an estimated population of 37,701 with a median household income of $46,939. The area falls within the America/Chicago timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: Wisconsin (WI)
County: Milwaukee
City: Milwaukee
Timezone: America/Chicago

Coordinates

Latitude: 42.954900
Longitude: -87.944700

Geographic Details

Land Area: 9.21 mi²
Water Area: 0.01 mi²
Population Density: 4094.0 people per mi² (90th percentile)
Bounding Box: 42.983826°N, 42.920823°S, -87.917890°E, -87.969247°W

With 37,701 residents spread across 9.21 square miles, this area has a population density of 4094.0 people per square mile.

Demographics

37,701

Population

90th percentile

$46,939

Median Income

45th percentile

$154,300

Median Home Value

60th percentile

9.21 mi²

Land Area

The median household income in 53221 is $46,939, and the median home value is $154,300.

Housing

16,596

Total Units

15,858

Occupied Units

95.6%

Occupancy Rate

Nearby ZIP Codes

Other zip codes in Milwaukee, WI.

53201

Milwaukee

53202

Milwaukee

53203

Milwaukee

53204

Milwaukee

53205

Milwaukee

53206

Milwaukee

53207

Milwaukee

53208

Milwaukee

53209

Milwaukee

53210

Milwaukee

Similar ZIP Codes in Wisconsin

ZIP codes with similar median household income in Wisconsin.

53007

Butler

$43,631

53019

Eden

$52,417

53034

Hustisford

$52,784

53039

Juneau

$52,010

53046

Lannon

$52,083

53048

Lomira

$49,767

53061

New Holstein

$44,625

53081

Sheboygan

$42,333

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.