🇺🇸 United States ZIP Code

STANDARD

60428

Markham

ZIP Code 60428 is a standard zip code serving Markham, Markham, Illinois (IL), in Will County, United States. It has an estimated population of 12,203 with a median household income of $39,739. The area falls within the America/Chicago timezone.

Median Household Income vs. National Average

Location

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

Coordinates

Latitude: 41.599800
Longitude: -87.690600

Geographic Details

Land Area: 5.19 mi²
Population Density: 2349.0 people per mi² (85th percentile)
Bounding Box: 41.622255°N, 41.586195°S, -87.650194°E, -87.719873°W

With 12,203 residents spread across 5.19 square miles, this area has a population density of 2349.0 people per square mile.

Demographics

12,203

Population

70th percentile

$39,739

Median Income

25th percentile

$106,500

Median Home Value

35th percentile

5.19 mi²

Land Area

The median household income in 60428 is $39,739, and the median home value is $106,500. This is below the national average for household income.

Housing

4,278

Total Units

3,882

Occupied Units

90.7%

Occupancy Rate

Similar ZIP Codes in Illinois

ZIP codes with similar median household income in Illinois.

60475

Steger

$43,138

62024

East Alton

$43,592

61434

Galva

$40,860

61369

Toluca

$43,917

60639

Chicago

$38,707

61422

Bushnell

$34,656

60115

Dekalb

$37,922

61244

East Moline

$43,741

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.