There are 26 zip codes in LaSalle County, Illinois. The most populated is 61350, located in Ottawa. * 2024 populations estimated based on the latest ACS 5-year data.
Zip Code | Population | City |
|---|---|---|
| 61350 | 24,385 | Ottawa |
| 61364 | 18,245 | Streator |
| 61354 | 10,422 | Peru |
| 61301 | 10,380 | La Salle |
| 61342 | 8,389 | Mendota |
| 61341 | 7,196 | Marseilles |
| 60551 | 4,850 | Sheridan |
| 61348 | 4,501 | Oglesby |
| 60518 | 3,514 | Earlville |
| 61360 | 3,379 | Seneca |
| 60531 | 2,269 | Leland |
| 61373 | 2,117 | Utica |
| 61377 | 1,469 | Wenona |
| 61370 | 1,168 | Tonica |
| 61325 | 1,028 | Grand Ridge |
| 60549 | 691 | Serena |
| 61334 | 604 | Lostant |
| 60537 | 551 | Millington |
| 60470 | 387 | Ransom |
| 61358 | 374 | Rutland |
| 61321 | 312 | Dana |
| 61372 | 269 | Troy Grove |
| 60557 | 218 | Wedron |
| 61316 | 196 | Cedar Point |
| 61332 | 139 | Leonore |
| 61371 | 85 | Triumph |