🇺🇸 United States ZIP Code

STANDARD

48134

Flat Rock

ZIP Code 48134 is a standard zip code serving Flat Rock, Flat Rock, Michigan (MI), in Wayne County, United States. It has an estimated population of 21,408 with a median household income of $57,660. The area falls within the America/Detroit timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: Michigan (MI)
County: Wayne
City: Flat Rock
Timezone: America/Detroit

Coordinates

Latitude: 42.105500
Longitude: -83.279500

Geographic Details

Land Area: 17.92 mi²
Water Area: 0.45 mi²
Population Density: 1195.0 people per mi² (80th percentile)
Bounding Box: 42.152560°N, 42.065356°S, -83.241666°E, -83.359500°W

With 21,408 residents spread across 17.92 square miles, this area has a population density of 1195.0 people per square mile.

Demographics

21,408

Population

80th percentile

$57,660

Median Income

70th percentile

$135,600

Median Home Value

50th percentile

17.92 mi²

Land Area

The median household income in 48134 is $57,660, and the median home value is $135,600.

Housing

8,416

Total Units

7,930

Occupied Units

94.2%

Occupancy Rate

Similar ZIP Codes in Michigan

ZIP codes with similar median household income in Michigan.

49238

Deerfield

$55,000

48631

Kawkawlin

$54,752

49456

Spring Lake

$57,262

49053

Galesburg

$55,615

48881

Saranac

$49,797

48017

Clawson

$51,868

48104

Ann Arbor

$49,756

48179

South Rockwood

$61,935

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.