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 — METRO/19500-DECATUR

Decatur, IL

ZIP codes
18
CBSA code
19500
Type
Metropolitan statistical area
States
IL
Population
101,849

Metro areas are defined by the Office of Management and Budget as whole counties, so every ZIP code in a member county is listed here.

Decatur in numbers

About 101,849 people live in the Decatur metropolitan area. The median household income is $62,666 a year (US: $80,734). The median owner-occupied home is valued at $127,300, and median gross rent is $847 a month.

Population101,849Decatur101,849
Median household income$62,666Decatur$62,666US $80,734
Median home value$127,300Decatur$127,300US $332,700
Median gross rent$847Decatur$847US $1,413

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

Its county

Counties in Decatur, IL
CountyZIP codesPopulationMedian income
Macon County, IL 18 101,849 $62,666

ZIP codes in Decatur

ZIP codes in Decatur, IL
ZIP City Type Population Median income Median home
61756 Maroa , IL Standard 2,542 $86,375 $181,300
61925 Dalton City , IL Standard 1,182 $81,316 $133,200
62501 Argenta , IL Standard 2,324 $95,889 $172,200
62514 Boody , IL Standard 297 $53,333 $103,100
62521 Decatur , IL Standard 32,665 $66,337 $125,100
62522 Decatur , IL Standard 15,185 $50,669 $113,600
62523 Decatur , IL Standard 707 $13,393 —
62524 Decatur , IL No street area — — —
62525 Decatur , IL No street area — — —
62526 Decatur , IL Standard 30,483 $49,062 $95,100
62532 Elwin , IL Standard 40 — $122,200
62535 Forsyth , IL Standard 3,502 $112,000 $281,000
62537 Harristown , IL Standard 272 $70,455 $87,500
62544 Macon , IL Standard 1,668 $89,167 $146,500
62549 Mt Zion , IL Standard 6,454 $100,566 $185,800
62551 Niantic , IL Standard 820 $69,583 $129,200
62554 Oreana , IL Standard 1,832 $95,625 $152,600
62573 Warrensburg , IL Standard 1,147 $94,583 $160,600

Cite this page

zipcodes.pro. “Decatur, IL.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/metro/19500-decatur

Underlying data is public domain or openly licensed — sources, vintages and licences.