🇺🇸 United States ZIP Code

STANDARD

48331

Farmington

ZIP Code 48331 is a standard zip code serving Farmington, Farmington, Michigan (MI), in Oakland County, United States. It has an estimated population of 21,503 with a median household income of $95,571. 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: Farmington
Timezone: America/Detroit

Coordinates

Latitude: 42.505100
Longitude: -83.407200

Geographic Details

Land Area: 9.29 mi²
Water Area: 0.01 mi²
Population Density: 2315.0 people per mi² (85th percentile)
Bounding Box: 42.527851°N, 42.468324°S, -83.377479°E, -83.437586°W

With 21,503 residents spread across 9.29 square miles, this area has a population density of 2315.0 people per square mile.

Demographics

21,503

Population

80th percentile

$95,571

Median Income

95th percentile

$243,000

Median Home Value

80th percentile

9.29 mi²

Land Area

The median household income in 48331 is $95,571, and the median home value is $243,000. This places the area in the top 25% nationally for household income.

Housing

8,792

Total Units

8,387

Occupied Units

95.4%

Occupancy Rate

Nearby ZIP Codes

Other zip codes in Farmington, MI.

48332

Farmington

48333

Farmington

48334

Farmington

48335

Farmington

48336

Farmington

Similar ZIP Codes in Michigan

ZIP codes with similar median household income in Michigan.

48324

West Bloomfield

$98,046

48360

Lake Orion

$84,926

48230

Grosse Pointe

$96,975

48348

Clarkston

$92,000

48114

Brighton

$83,661

48380

Milford

$89,167

48095

Washington

$84,539

48363

Oakland

$92,717

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.