LaSalle County, Illinois ZIP codes
26 ZIP codes are in LaSalle County, plus 3 that cross in from neighboring counties. It's part of the Ottawa, IL micro area.
- ZIP codes
- 26
- Population in these ZIPs
- 106,524
- Avg. median income
- $73,100population-weighted
- Cities & towns
- 26
Click anywhere on the map to see which ZIP code it's in.
ZIP codes in LaSalle County
| ZIP code | City | Population | Median income | Typical home value |
|---|---|---|---|---|
| 60470 | Ransom | 358 | $85,000 | $206,400 |
| 60518 | Earlville | 3,289 | $69,980 | $246,400 |
| 60531 | Leland | 1,885 | $79,808 | $279,400 |
| 60537 | Millington | 726 | $81,825 | $289,200 |
| 60549 | Serena | 784 | $108,417 | $317,600 |
| 60551 | Sheridan | 5,058 | $86,786 | $301,800 |
| 60557 | Wedron | 0 | — | — |
| 61301 | La Salle | 10,398 | $60,328 | $139,400 |
| 61316 | Cedar Point | 256 | $74,375 | $90,000 |
| 61321 | Dana | 224 | $80,257 | $92,000 |
| 61325 | Grand Ridge | 949 | $87,500 | $235,300 |
| 61332 | Leonore | 104 | $50,313 | $80,000 |
| 61334 | Lostant | 738 | $86,250 | $172,200 |
| 61341 | Marseilles | 7,692 | $72,530 | $211,500 |
| 61342 | Mendota | 8,543 | $65,348 | $177,300 |
| 61348 | Oglesby | 4,375 | $76,369 | $167,600 |
| 61350 | Ottawa | 23,713 | $77,921 | $215,100 |
| 61354 | Peru | 10,290 | $76,392 | $183,500 |
| 61358 | Rutland | 407 | $88,393 | $192,000 |
| 61360 | Seneca | 3,610 | $95,093 | $231,800 |
| 61364 | Streator | 17,963 | $59,060 | $126,300 |
| 61370 | Tonica | 1,215 | $91,094 | $223,300 |
| 61371 | Triumph | 83 | — | $108,600 |
| 61372 | Troy Grove | 300 | $83,917 | $200,800 |
| 61373 | Utica | 2,123 | $109,000 | $264,100 |
| 61377 | Wenona | 1,441 | $57,321 | $124,700 |
ZIP codes partly in LaSalle County
These ZIP codes are mostly in a neighboring county but cover part of LaSalle County.
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 60541 | Newark | Kendall County | 3,342 | $118,100 | $397,100 |
| 60548 | Sandwich | DeKalb County | 11,721 | $82,957 | $322,900 |
| 60552 | Somonauk | DeKalb County | 4,285 | $113,411 | $325,600 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities and towns in LaSalle County
Nearby counties
Frequently asked questions
How many ZIP codes are in LaSalle County, Illinois?
26 ZIP codes are mainly in LaSalle County, and 3 more ZIP codes from neighboring areas reach partly into it.
What cities are in LaSalle County?
ZIP codes in LaSalle County use the city names Cedar Point, Dana, Earlville, Grand Ridge, La Salle, Leland, Leonore, Lostant, Marseilles, Mendota, Millington and Oglesby and others.
What metro area is LaSalle County in?
LaSalle County is part of the Ottawa, IL micropolitan statistical area.