Decatur, IL ZIP Codes
Decatur, Illinois has 6 ZIP codes: 4 for street addresses (, , and ) and 2 for PO boxes ( and ).
Your street decides which one you use.
Which Decatur ZIP code is my address in?
Street ranges from the Census Bureau, 2026. PO box and organization ZIP codes are not found by street. A new street may be missing: address not found?
Decatur ZIP code map
Tap or point to an area to see its ZIP code.Full-size map
62524 and 62525 have no area on the map: they are PO box or single-organization ZIP codes. Dashed line: Decatur city limits.
Map: Census Bureau ZIP Code Tabulation Areas (2020) and place limits (2024).
All Decatur ZIP codes by type
| ZIP | Type and post office or station |
|---|---|
| 62521 | street delivery Decatur |
| 62522 | street delivery Decatur |
| 62523 | street delivery Decatur |
| 62524 | PO boxes at the Memorial post office Memorial |
| 62525 | PO boxes at the Decatur post office Decatur |
| 62526 | street delivery Memorial |
Why your mail may say Decatur when you live outside it
Decatur ZIP codes also cover Hickory Point Township, Decatur Township and Harristown Township, so a letter addressed to Decatur can go to a home outside the city limits.
A ZIP code does not set your city, school district or tax. Macon County property records show which city you are in.
Decatur ZIP code questions
What is the main ZIP code for Decatur?
62521, the ZIP code of the main Decatur post office at 214 N Franklin St Fl 1.
Which Decatur ZIP codes are for PO boxes only?
62524 and 62525. Mail to them goes to boxes at the post office, not to street addresses.
What county is Decatur in?
Macon County.
ZIP codes for towns near Decatur
More towns near Decatur: Peoria, Terre Haute, O'Fallon, Florissant, Belleville, St. Louis, University City, St. Charles, West Lafayette.
Sources and last checked
USPS ZIP Locale Detail (October 1, 2026), GeoNames (CC BY 4.0), U.S. Census Bureau, HUD-USPS crosswalk.
Checked October 20, 2026. Sources · How we build our lists · Corrections