ZIP Code 61259 – Illinois City, IL
Illinois City, Illinois · Rock Island County · Central time
| ZIP code | 61259 |
|---|---|
| City | Illinois City |
| State | Illinois |
| County | Rock Island CountyMercer County |
| Population | 1,053 |
| Time zone | Central · local time |
| ZIP type | Standard (has a Census ZCTA area) |
| Land area | 76.83 sq mi |
| Center (lat, long) | 41.3856, -90.9245 |
Area codes in this area
These are the area codes that most often serve ZIP 61259 (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.
Map
Nearby ZIP codes
About ZIP 61259
ZIP code 61259 is assigned to Illinois City, Illinois. It crosses 2 counties; most of its land is in Rock Island County. Its Census area covers about 76.83 square miles of land. The closest neighboring ZIP is 61237 (Buffalo Prairie), about 4.4 miles away.
Every address in 61259 also has a 4-digit add-on code (ZIP+4) that points to a smaller delivery area. Use the box above to find it.
Sources: US Census Bureau (ZCTA, county relationship files), GeoNames (CC BY 4.0), NANPA via NumberResearch.org (CC BY 4.0). Map © OpenStreetMap contributors. ZIP areas are approximate. Population: U.S. Census Bureau, ACS 5-year estimates, 2024 (ZCTA). Data sources