ZIP Codes in Plainfield, IL
Plainfield uses 3 ZIP codes, all in Will County. Pick one below for details, or look up the full nine-digit ZIP+4 for a specific street address.
All 3 Plainfield ZIP codes
| ZIP | Type | County | Population |
|---|---|---|---|
| 60544 | standard | Will | 27,306 |
| 60585 | standard | Will | 25,960 |
| 60586 | standard | Will | 47,834 |
Finding a ZIP+4 in Plainfield
Knowing which of these 3 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 Plainfield 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 Plainfield addresses and download it complete.