ZIP Codes in Decatur, IL
Decatur uses 4 ZIP codes, all in Macon County. Pick one below for details, or look up the full nine-digit ZIP+4 for a specific street address.
All 4 Decatur ZIP codes
| ZIP | Type | County | Population |
|---|---|---|---|
| 62521 | standard | Macon | 32,665 |
| 62522 | standard | Macon | 15,185 |
| 62523 | standard | Macon | 707 |
| 62526 | standard | Macon | 30,483 |
Finding a ZIP+4 in Decatur
Knowing which of these 4 ZIP codes covers an address only gets you partway. The four-digit extension identifies the specific delivery point — typically one side of one block. Two houses facing each other on the same Decatur street almost always have different ZIP+4 codes even though they share all five leading digits.
Appending ZIP+4 to a mailing list?
Upload a CSV of Decatur addresses and download it complete.