🇺🇸 United States ZIP Code

STANDARD

48028

Harsens Island

ZIP Code 48028 is a standard zip code serving Harsens Island, Harsens Island, Michigan (MI), in St. Clair County, United States. It has an estimated population of 1,190 with a median household income of $58,281. 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: Harsens Island
Timezone: America/Detroit

Coordinates

Latitude: 42.585000
Longitude: -82.586000

Geographic Details

Land Area: 17.74 mi²
Water Area: 15.95 mi²
Population Density: 67.0 people per mi² (45th percentile)
Bounding Box: 42.629863°N, 42.518559°S, -82.518599°E, -82.711872°W

With 1,190 residents spread across 17.74 square miles, this area has a population density of 67.0 people per square mile.

Demographics

1,190

Population

30th percentile

$58,281

Median Income

70th percentile

$224,200

Median Home Value

75th percentile

17.74 mi²

Land Area

The median household income in 48028 is $58,281, and the median home value is $224,200.

Housing

1,541

Total Units

609

Occupied Units

39.5%

Occupancy Rate

Similar ZIP Codes in Michigan

ZIP codes with similar median household income in Michigan.

49201

Jackson

$49,988

48082

Saint Clair Shores

$53,518

48314

Sterling Heights

$58,498

49649

Kingsley

$51,406

48430

Fenton

$62,807

48150

Livonia

$63,576

49046

Delton

$49,693

49730

Elmira

$51,534

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.