🇺🇸 United States ZIP Code

STANDARD

48059

Fort Gratiot

ZIP Code 48059 is a standard zip code serving Fort Gratiot, Fort Gratiot, Michigan (MI), in St. Clair County, United States. It has an estimated population of 15,123 with a median household income of $50,704. The area falls within the America/Detroit timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: Michigan (MI)
County: St. Clair
City: Fort Gratiot
Timezone: America/Detroit

Coordinates

Latitude: 43.088800
Longitude: -82.490500

Geographic Details

Land Area: 31.58 mi²
Water Area: 7.21 mi²
Population Density: 479.0 people per mi² (70th percentile)
Bounding Box: 43.168946°N, 42.999512°S, -82.428422°E, -82.544925°W

With 15,123 residents spread across 31.58 square miles, this area has a population density of 479.0 people per square mile.

Demographics

15,123

Population

75th percentile

$50,704

Median Income

55th percentile

$128,000

Median Home Value

50th percentile

31.58 mi²

Land Area

The median household income in 48059 is $50,704, and the median home value is $128,000.

Housing

7,135

Total Units

6,213

Occupied Units

87.1%

Occupancy Rate

Similar ZIP Codes in Michigan

ZIP codes with similar median household income in Michigan.

48631

Kawkawlin

$54,752

48860

Muir

$45,536

48809

Belding

$44,533

49505

Grand Rapids

$44,710

48813

Charlotte

$52,889

49241

Hanover

$52,750

48359

Lake Orion

$58,150

49011

Athens

$52,610

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.