🇺🇸 United States ZIP Code

STANDARD

48040

Marysville

ZIP Code 48040 is a standard zip code serving Marysville, Marysville, Michigan (MI), in St. Clair County, United States. It has an estimated population of 9,956 with a median household income of $53,237. 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: Marysville
Timezone: America/Detroit

Coordinates

Latitude: 42.913500
Longitude: -82.481300

Geographic Details

Land Area: 6.91 mi²
Water Area: 0.99 mi²
Population Density: 1441.0 people per mi² (80th percentile)
Bounding Box: 42.937153°N, 42.876199°S, -82.447719°E, -82.501219°W

With 9,956 residents spread across 6.91 square miles, this area has a population density of 1441.0 people per square mile.

Demographics

9,956

Population

65th percentile

$53,237

Median Income

60th percentile

$120,700

Median Home Value

45th percentile

6.91 mi²

Land Area

The median household income in 48040 is $53,237, and the median home value is $120,700.

Housing

4,513

Total Units

4,158

Occupied Units

92.1%

Occupancy Rate

Similar ZIP Codes in Michigan

ZIP codes with similar median household income in Michigan.

48001

Algonac

$45,625

48003

Almont

$55,446

48006

Avoca

$57,317

48014

Capac

$50,234

48017

Clawson

$51,868

48026

Fraser

$51,585

48027

Goodells

$56,331

48028

Harsens Island

$58,281

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.