🇺🇸 United States ZIP Code

STANDARD

62638

Franklin

ZIP Code 62638 is a standard zip code serving Franklin, Franklin, Illinois (IL), in Morgan County, United States. It has an estimated population of 1,337 with a median household income of $55,278. The area falls within the America/Chicago timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: Illinois (IL)
County: Morgan
City: Franklin
Timezone: America/Chicago

Coordinates

Latitude: 39.622200
Longitude: -90.088900

Geographic Details

Land Area: 67.60 mi²
Water Area: 0.17 mi²
Population Density: 20.0 people per mi² (20th percentile)
Bounding Box: 39.710319°N, 39.502043°S, -90.001956°E, -90.182310°W

With 1,337 residents spread across 67.60 square miles, this area has a population density of 20.0 people per square mile.

Demographics

1,337

Population

30th percentile

$55,278

Median Income

65th percentile

$103,100

Median Home Value

35th percentile

67.60 mi²

Land Area

The median household income in 62638 is $55,278, and the median home value is $103,100.

Housing

611

Total Units

534

Occupied Units

87.4%

Occupancy Rate

Similar ZIP Codes in Illinois

ZIP codes with similar median household income in Illinois.

62615

Auburn

$61,074

60135

Genoa

$61,798

60139

Glendale Heights

$63,039

62234

Collinsville

$52,289

61250

Erie

$57,875

62321

Carthage

$49,882

60180

Union

$57,176

60964

Saint Anne

$53,975

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.