Where is Johnson County, Illinois?

location of Johnson county on a map — Location of Johnson County within the state of Illinois

Johnson County is a county equivalent area found in Illinois, USA. The county government of Johnson is found in the county seat of Vienna.

With a total 903.55 sq. km of land and water area, Johnson County, Illinois is the 2734th largest county equivalent area in the United States. Home to 12,601 people, Johnson County has a total 5527 households earning 40760 on average per year.

Johnson County, Illinois - Quick Facts

FIPS Code	17087
Area Codes	618
Time Zone	CST
Major Cities	Vienna (population: 5,358), Goreville (population: 3,161), Ozark (population: 1,217), Buncombe (population: 1,182), Simpson (population: 833), Grantsburg (population: 717), Cypress (population: 523), New Burnside (population: 330)
Land Area	4,865 sq miles
Water Area	344 sq miles
Household Income	$40,760
Housing Units	5,527
Median Home Value	$89,800
High School Grads	83% of population
Holders of Bachelors Degrees	15% of population
Retail Spending	$4,788 per capita
Food & Accomodation Sales	$6,806 per capita