Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — CITY/IL/FRANKFORT-SQUARE

Frankfort Square ZIP codes, Illinois

No ZIP code is named for Frankfort Square, IL; addresses there use a neighbouring town's name. The ZIP code covering it is 60423. Its area codes are 779 and 815.

USPS city name
0 ZIP codes
Overlapping the city
1 more
Population
9,560
Area codes
779, 815

NANPA lists no telephone rate centre for Frankfort Square itself, so these are the area codes of the nearest one, Frankfort (0.0 miles). A town on an area-code boundary can differ from its neighbour.

Frankfort Square in numbers

About 9,560 people live in Frankfort Square, in 3,206 households. The median household income is $126,897 a year, 52% above the Illinois median of $83,390 (US: $80,734). The median owner-occupied home is valued at $305,800 (16% above the Illinois median), and median gross rent is $1,622 a month. The median age is 42.3; 32.9% of adults 25 and over hold a bachelor's degree or higher (37.8% across Illinois); the average commute takes 28 minutes.

Population9,560Frankfort Square9,560
Households3,206Frankfort Square3,206
Median age42.3Frankfort Square42.3Illinois39.0US 38.9
Median household income$126,897Frankfort Square$126,897Illinois$83,390US $80,734
Median home value$305,800Frankfort Square$305,800Illinois$263,300US $332,700
Median gross rent$1,622Frankfort Square$1,622Illinois$1,274US $1,413
Bachelor's degree or higher32.9%Frankfort Square32.9%Illinois37.8%US 35.7%
Mean commute28.0 minFrankfort Square28.0 minIllinois27.8 minUS 26.4 min
Population density3,830 / sq miFrankfort Square3,830 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place Frankfort Square CDP. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes covering Frankfort Square

These ZIP codes cover part of Frankfort Square but are addressed as somewhere else.

ZIP codes overlapping Frankfort Square
ZIP City Type Population Median income Median home
60423 Frankfort , IL Standard 32,836 $136,730 $398,200

Map of Frankfort Square ZIP codes

60423

The ZIP codes of Frankfort Square, IL, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Towns near Frankfort Square

The nearest larger towns are Matteson (18,645 people, 3.1 mi), Tinley Park (54,842 people, 3.2 mi) and Frankfort (20,651 people, 3.7 mi).

Towns near Frankfort Square
TownPopulationDistance
Matteson 18,645 3.1 mi
Tinley Park 54,842 3.2 mi
Frankfort 20,651 3.7 mi
Mokena 20,021 3.9 mi
Richton Park 12,521 4.3 mi
Country Club Hills 16,324 4.9 mi
Orland Hills 6,719 5.2 mi
Olympia Fields 4,734 5.8 mi
Flossmoor 9,391 6.2 mi
Oak Forest 26,805 6.4 mi
Orland Park 57,916 6.6 mi
Park Forest 21,156 6.6 mi
Hazel Crest 13,792 6.9 mi
University Park 7,306 7.0 mi

More nearby: every ZIP code in Will County · Illinois ZIP codes

Cite this page

zipcodes.pro. “Frankfort Square, IL ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/il/frankfort-square

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