🇺🇸 United States ZIP Code

STANDARD

48390

Walled Lake

ZIP Code 48390 is a standard zip code serving Walled Lake, Walled Lake, Michigan (MI), in Oakland County, United States. It has an estimated population of 22,898 with a median household income of $63,641. The area falls within the America/Detroit timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: Michigan (MI)
County: Oakland
City: Walled Lake
Timezone: America/Detroit

Coordinates

Latitude: 42.558200
Longitude: -83.477300

Geographic Details

Land Area: 12.53 mi²
Water Area: 0.97 mi²
Population Density: 1827.0 people per mi² (80th percentile)
Bounding Box: 42.582328°N, 42.524983°S, -83.437586°E, -83.528985°W

With 22,898 residents spread across 12.53 square miles, this area has a population density of 1827.0 people per square mile.

Demographics

22,898

Population

80th percentile

$63,641

Median Income

75th percentile

$156,900

Median Home Value

60th percentile

12.53 mi²

Land Area

The median household income in 48390 is $63,641, and the median home value is $156,900. This places the area in the top 25% nationally for household income.

Housing

10,464

Total Units

9,736

Occupied Units

93.0%

Occupancy Rate

Nearby ZIP Codes

Other zip codes in Walled Lake, MI.

48391

Walled Lake

Similar ZIP Codes in Michigan

ZIP codes with similar median household income in Michigan.

49270

Petersburg

$59,489

48353

Hartland

$72,675

49234

Clarklake

$58,250

48002

Allenton

$62,958

49087

Schoolcraft

$64,710

48377

Novi

$54,622

48054

East China

$58,250

49287

Tipton

$62,269

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.