McDonough County, Illinois
10 ZIP codes · 589.3 sq mi of land · FIPS 17109
| Population | 26,920 |
|---|---|
| State | Illinois |
| FIPS code | 17109 |
| Time zone | Central |
| Land area | 589.3 sq mi |
| Center (lat, long) | 40.4558, -90.6790 |
Area codes in this area
These are the area codes that most often serve McDonough County (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.
Cities and towns (largest first)
ZIP codes in McDonough County
61411 Adair61416 Bardolph61420 Blandinsville61422 Bushnell61438 Good Hope61440 Industry61455 Macomb61470 Prairie City61475 Sciota62326 Colchester
Population: U.S. Census Bureau, ACS 5-year estimates, 2024.