There are 18 cities in Illinois that start with the letter J.
City | 2024 Pop. |
|---|---|
| Jacksonville | 17,120 |
| Janesville | 51 |
| Jeffersonville | 341 |
| Jeisyville | 99 |
| Jerome | 1,630 |
| Jerseyville | 8,243 |
| Jewett | 195 |
| Johnsburg | 6,394 |
| Johnsonville | 69 |
| Johnston City | 3,284 |
| Joliet | 150,568 |
| Jonesboro | 1,623 |
| Joppa | 328 |
| Joslin | 69 |
| Joy | 362 |
| Junction | 52 |
| Junction City | 517 |
| Justice | 11,920 |