🇺🇸 United States ZIP Code

STANDARD

60304

Oak Park

ZIP Code 60304 is a standard zip code serving Oak Park, Oak Park, Illinois (IL), in Cook County, United States. It has an estimated population of 17,231 with a median household income of $85,607. The area falls within the America/Chicago timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: Illinois (IL)
County: Cook
City: Oak Park
Timezone: America/Chicago

Coordinates

Latitude: 41.872500
Longitude: -87.787700

Geographic Details

Land Area: 1.53 mi²
Population Density: 11244.0 people per mi² (95th percentile)
Bounding Box: 41.880152°N, 41.864977°S, -87.774139°E, -87.804706°W

With 17,231 residents spread across 1.53 square miles, this area has a population density of 11244.0 people per square mile.

Demographics

17,231

Population

75th percentile

$85,607

Median Income

90th percentile

$350,200

Median Home Value

90th percentile

1.53 mi²

Land Area

The median household income in 60304 is $85,607, and the median home value is $350,200. This places the area in the top 25% nationally for household income.

Housing

7,085

Total Units

6,630

Occupied Units

93.6%

Occupancy Rate

Nearby ZIP Codes

Other zip codes in Oak Park, IL.

60301

Oak Park

60302

Oak Park

60303

Oak Park

Similar ZIP Codes in Illinois

ZIP codes with similar median household income in Illinois.

62294

Troy

$77,671

61011

Caledonia

$87,750

60013

Cary

$97,828

61822

Champaign

$77,005

62711

Springfield

$91,667

62062

Maryville

$79,841

61088

Winnebago

$73,426

62693

Williamsville

$80,625

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.