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US ZIP Code Profile

ZIP Code 60523
Oak Brook, Illinois

ZIP code 60523 is in Oak Brook, located in Dupage County, Illinois, within the Chicago-Naperville-Elgin metro area. Its 2020 Census population was 10,347. The estimated median adjusted gross income per tax return is $118,687, and about 36% of filers report $200,000 or more.

2020 Population
10,347
Census ZCTA
County
Dupage
FIPS 17043
Median income (est.)
$118,687
IRS SOI 2022
Land Area
8.955 mi²
+ 0.332 mi² water

01Location & Geography

Authoritative geographic identifiers from the U.S. Census Bureau, ANSI, and FIPS standards.

Primary CityOak Brook, IL
CountyDupage County (FIPS 17043)
StateIllinois (FIPS 17)
Metro Area (MSA)Chicago-Naperville-Elgin, IL-IN-WI Metro Area (16980)
Census Region / DivisionMidwest Region · East North Central Division
Coordinates41.836395, -87.95317
Land / Water Area8.955 mi² land · 0.332 mi² water

02Income & Economics

Distribution of the 5,550 individual tax returns filed in 60523 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
20.9%
$25K–$50K
9.9%
$50K–$75K
8.8%
$75K–$100K
7.0%
$100K–$200K
17.8%
$200K+
35.5%
The $200,000+ bracket accounts for 88% of 60523's total adjusted gross income, from 36% of returns — a concentration that drives the gap between the median ($118,687) and the average.
Estimated median = median adjusted gross income per tax return, interpolated from IRS SOI brackets. Differs from U.S. Census household income.

03Income Over Time

Year-over-year change in 60523's IRS income metrics, 2020–2022.

Median income (2021→2022)
$118,687
▲ 1.4%
Filers earning $200K+
35.5%
▲ 0.7 pt
Total filers
5,550
▲ 1.6%
GET /zipc/v2/zipcodes/60523/soi?year=… $95K 2020 $117K 2021 $119K 2022
Median = adjusted gross income per return, interpolated from IRS SOI brackets. Figures are nominal (not inflation-adjusted).

04Population Trend

Decennial U.S. Census population for the 60523 ZCTA.

2000
10,231
 
2010
9,890
▼ -3.3%
2020
10,347
▲ +4.6%

05Nearby ZIP Codes — Live Radius Search

Drag the slider to filter ZIP codes by distance from 60523. Powered by the same radius endpoint developers call from the API.

GET /zipc/v2/radius

ZIP codes within range of 60523

Oak Brook and its immediate neighbors, sorted by distance.

3 mi
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Distance from 60523 to any ZIP

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06USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortB
USPS Finance Number163654
City AliasesOak Brook, Hinsdale

07Frequently Asked Questions

What county is ZIP code 60523 in?

ZIP code 60523 is in Dupage County, Illinois (county FIPS code 17043).

What city is ZIP code 60523?

The primary USPS city for 60523 is Oak Brook, IL.

What metro area (MSA) is 60523 in?

60523 is part of the Chicago-Naperville-Elgin, IL-IN-WI Metro Area (MSA code 16980).

What is the population of ZIP code 60523?

The 2020 Census population of 60523 was 10,347 residents.

What is the median income in ZIP code 60523?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 60523 is about $118,687, with around 36% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.