🇺🇸 United States ZIP Code

STANDARD

48189

Whitmore Lake

ZIP Code 48189 is a standard zip code serving Whitmore Lake, Whitmore Lake, Michigan (MI), in Washtenaw County, United States. It has an estimated population of 13,632 with a median household income of $56,759. 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: Whitmore Lake
Timezone: America/Detroit

Coordinates

Latitude: 42.428900
Longitude: -83.782800

Geographic Details

Land Area: 34.33 mi²
Water Area: 2.23 mi²
Population Density: 397.0 people per mi² (70th percentile)
Bounding Box: 42.470389°N, 42.343361°S, -83.702370°E, -83.887364°W

With 13,632 residents spread across 34.33 square miles, this area has a population density of 397.0 people per square mile.

Demographics

13,632

Population

70th percentile

$56,759

Median Income

65th percentile

$146,700

Median Home Value

55th percentile

34.33 mi²

Land Area

The median household income in 48189 is $56,759, and the median home value is $146,700.

Housing

6,005

Total Units

5,454

Occupied Units

90.8%

Occupancy Rate

Similar ZIP Codes in Michigan

ZIP codes with similar median household income in Michigan.

48051

New Baltimore

$64,328

48327

Waterford

$51,596

49621

Cedar

$52,743

49078

Otsego

$49,363

48848

Laingsburg

$64,830

49428

Jenison

$57,859

49101

Baroda

$50,313

48014

Capac

$50,234

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.