Tennessee County Map with Interstate You Belong Here Anderson CountyBlount CountyGrainger CountyJefferson CountyKnox CountyLoudon CountyRoane CountySevier CountyUnion County Knox County Total population 478,971 Children < 18 21% Rural population 10.9% More information about Knox County Knox County CountyLearn about Knox CountyLearn about Knox County UT Extension NeighborhoodsLearn about neighborhoods in Knox County Leisure ActivitiesKnox County Recreation and Arts SchoolsKnox County school system Area Information * WeatherRealtorsCost of LivingImmigration and Citizenship Area Rentals * ZillowFor RentHomes for Rent *Listing links does not imply endorsement Visit Knoxville Guide Visit UT Knoxville Tennessee County Profiles UT Off Campus Housing