ZIP Codes in Belleville, IL
Belleville uses 4 ZIP codes, all in St. Clair County. Pick one below for details, or look up the full nine-digit ZIP+4 for a specific street address.
All 4 Belleville ZIP codes
| ZIP | Type | County | Population |
|---|---|---|---|
| 62220 | standard | St. Clair | 19,152 |
| 62221 | standard | St. Clair | 29,875 |
| 62223 | standard | St. Clair | 16,269 |
| 62226 | standard | St. Clair | 28,255 |
Finding a ZIP+4 in Belleville
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 Belleville 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 Belleville addresses and download it complete.