25 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 61614 | Peoria | 28,142 |
| 61604 | Peoria | 27,502 |
| 61615 | Peoria | 23,266 |
| 61603 | Peoria | 15,430 |
| 61605 | Peoria | 13,538 |
| 61525 | Dunlap | 12,066 |
| 61607 | Peoria | 10,734 |
| 61523 | Chillicothe | 10,188 |
| 61606 | Peoria | 6,979 |
| 61616 | Peoria Heights | 5,834 |
| 61547 | Mapleton | 3,740 |
| 61559 | Princeville | 3,726 |
| 61536 | Hanna City | 3,445 |
| 61528 | Edwards | 3,263 |
| 61517 | Brimfield | 3,154 |
| 61529 | Elmwood | 2,784 |
| 61533 | Glasford | 2,359 |
| 61602 | Peoria | 977 |
| 61569 | Trivoli | 939 |
| 61526 | Edelstein | 887 |
| 61625 | Peoria | 443 |
| 61451 | Laura | 246 |
| 61552 | Mossville | 210 |
| 61539 | Kingston Mines | 142 |
| 61562 | Rome | 35 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 25 ZCTAs in Peoria County, Illinois (US Census).