25 ZIP Codes
| Zip Code | City | Population ↓ |
|---|---|---|
| 61604 | Peoria | 28,313 |
| 61614 | Peoria | 27,370 |
| 61615 | Peoria | 23,523 |
| 61603 | Peoria | 15,356 |
| 61605 | Peoria | 13,424 |
| 61525 | Dunlap | 12,357 |
| 61607 | Peoria | 10,600 |
| 61523 | Chillicothe | 10,203 |
| 61606 | Peoria | 6,684 |
| 61616 | Peoria Heights | 5,825 |
| 61559 | Princeville | 3,595 |
| 61547 | Mapleton | 3,562 |
| 61536 | Hanna City | 3,503 |
| 61528 | Edwards | 3,212 |
| 61517 | Brimfield | 3,033 |
| 61529 | Elmwood | 2,763 |
| 61533 | Glasford | 2,441 |
| 61602 | Peoria | 1,163 |
| 61526 | Edelstein | 1,105 |
| 61569 | Trivoli | 938 |
| 61625 | Peoria | 456 |
| 61451 | Laura | 272 |
| 61539 | Kingston Mines | 147 |
| 61552 | Mossville | 51 |
| 61562 | Rome | 38 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 25 ZCTAs in Peoria County, Illinois (US Census).