Knox County, Illinois
17 ZIP codes · 716.36 sq mi of land · FIPS 17095
| Population | 49,046 |
|---|---|
| State | Illinois |
| FIPS code | 17095 |
| Time zone | Central |
| Land area | 716.36 sq mi |
| Center (lat, long) | 40.9309, -90.2138 |
Area codes in this area
These are the area codes that most often serve Knox 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)
Galesburg · 29,481AbingdonAltonaDahindaEast GalesburgGilsonHendersonKnoxvilleMaquonOneidaRioSaint AugustineVictoriaWatagaWilliamsfieldYates City
ZIP codes in Knox County
61401 Galesburg61402 Galesburg61410 Abingdon61414 Altona61428 Dahinda61430 East Galesburg61436 Gilson61439 Henderson61448 Knoxville61458 Maquon61467 Oneida61472 Rio61474 Saint Augustine61485 Victoria61488 Wataga61489 Williamsfield61572 Yates City
Population: U.S. Census Bureau, ACS 5-year estimates, 2024.