🇺🇸 United States ZIP Code

STANDARD

48104

Ann Arbor

ZIP Code 48104 is a standard zip code serving Ann Arbor, Ann Arbor, Michigan (MI), in Washtenaw County, United States. It has an estimated population of 38,315 with a median household income of $49,756. The area falls within the America/Detroit timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: Michigan (MI)
County: Washtenaw
City: Ann Arbor
Timezone: America/Detroit

Coordinates

Latitude: 42.269400
Longitude: -83.728200

Geographic Details

Land Area: 7.78 mi²
Water Area: 0.25 mi²
Population Density: 4927.0 people per mi² (90th percentile)
Bounding Box: 42.302987°N, 42.243928°S, -83.675782°E, -83.752204°W

With 38,315 residents spread across 7.78 square miles, this area has a population density of 4927.0 people per square mile.

Demographics

38,315

Population

90th percentile

$49,756

Median Income

50th percentile

$249,100

Median Home Value

80th percentile

7.78 mi²

Land Area

The median household income in 48104 is $49,756, and the median home value is $249,100.

Housing

16,456

Total Units

15,561

Occupied Units

94.6%

Occupancy Rate

Nearby ZIP Codes

Other zip codes in Ann Arbor, MI.

48103

Ann Arbor

48105

Ann Arbor

48106

Ann Arbor

48107

Ann Arbor

48108

Ann Arbor

48109

Ann Arbor

48113

Ann Arbor

Similar ZIP Codes in Michigan

ZIP codes with similar median household income in Michigan.

48897

Woodland

$53,393

49096

Vermontville

$52,500

48420

Clio

$49,566

49457

Twin Lake

$51,649

49451

Ravenna

$51,291

49755

Levering

$42,313

48064

Casco

$56,310

49735

Gaylord

$48,102

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.