Mercer County, Illinois
13 ZIP codes · 561.24 sq mi of land · FIPS 17131
| Population | 15,495 |
|---|---|
| State | Illinois |
| FIPS code | 17131 |
| Time zone | Central |
| Land area | 561.24 sq mi |
| Center (lat, long) | 41.2056, -90.7418 |
Area codes in this area
These are the area codes that most often serve Mercer 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)
AledoJoyMathervilleNew BostonPreemptionReynoldsSherrardAlexisKeithsburgNew WindsorNorth HendersonSeatonViola
ZIP codes in Mercer County
61231 Aledo61260 Joy61263 Matherville61272 New Boston61276 Preemption61279 Reynolds61281 Sherrard61412 Alexis61442 Keithsburg61465 New Windsor61466 North Henderson61476 Seaton61486 Viola
Population: U.S. Census Bureau, ACS 5-year estimates, 2024.