🇺🇸 United States ZIP Code

STANDARD

48879

Saint Johns

ZIP Code 48879 is a standard zip code serving Saint Johns, Saint Johns, Michigan (MI), in Clinton County, United States. It has an estimated population of 18,075 with a median household income of $52,996. The area falls within the America/Detroit timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: Michigan (MI)
County: Clinton
City: Saint Johns
Timezone: America/Detroit

Coordinates

Latitude: 43.005900
Longitude: -84.571900

Geographic Details

Land Area: 189.06 mi²
Water Area: 0.80 mi²
Population Density: 96.0 people per mi² (50th percentile)
Bounding Box: 43.139322°N, 42.885919°S, -84.409428°E, -84.739638°W

With 18,075 residents spread across 189.06 square miles, this area has a population density of 96.0 people per square mile.

Demographics

18,075

Population

75th percentile

$52,996

Median Income

60th percentile

$140,100

Median Home Value

55th percentile

189.06 mi²

Land Area

The median household income in 48879 is $52,996, and the median home value is $140,100.

Housing

7,299

Total Units

6,806

Occupied Units

93.2%

Occupancy Rate

Similar ZIP Codes in Michigan

ZIP codes with similar median household income in Michigan.

48655

Saint Charles

$49,337

49412

Fremont

$47,458

49058

Hastings

$46,777

48881

Saranac

$49,797

49230

Brooklyn

$54,497

48876

Potterville

$56,332

49653

Lake Leelanau

$46,429

48657

Sanford

$52,784

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.