Johnson County, Illinois

Johnson County is a county located in Illinois, in the Midwestern Region (East North Central) of United States. In 2000, the population was 12878. Its population in July 2008 was estimated to be about 13731, It is Illinois's 22nd least populous county. It covers total area of 348.88 mi˛ (903.6 square kilometre), of which, 344.63 square miles (892.59 square kilometre) of it is land and 4.25 square miles (11.01 square kilometre) of it is water, it is the 19th smallest by area in the U.S. state of Illinois.

Johnson County Illinois
Map of Johnson County, Illinois

According to 2000 Census Bureau, there were 12878 residents, 4183 households, and 3052 families in the county. The population density was 37.4 people per square mile (14.44/km˛), giving it the 68th most densely populated county among the Illinois. There were 5046 housing units at an average density of 14.6 per square mile (5.64/km˛). The average household size was 2.43 persons, and the average family size was 2.87 persons. The population's age distribution was 18.3% under the age of 18, 11.4% from 18 to 24, 34% from 25 to 44, 22.7% from 45 to 64, and 13.6% who were 65 or older. For every 100 females there were 149 males. For every 100 females age 18 and over, there were 160.2 males. Its population was estimated at 13731 in July 2008, The racial makeup of the county was 83.05% White, 15.79% Black or African American, 0.26% American Indian, 0.13% Asian, 0.04% Native Hawaiian, and 0.73% from two or more races.

Johnson County Illinois Population 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
Population 2000-2008
Johnson County Illinois School Enrollment
School Enrollment 2000
Johnson County Illinois GDP
GDP 2000

The median income for a household in the county was $33326, making it the 27th lowest county by median household income in Illinois. The median income for a family in the county was $40275, making it the 21st lowest county by median family income in Illinois. The per capita income for the county was $17990, it is the 49th highest county by per capita income in the U.S. state of Illinois.

In 2000, 2829 pupils and students, of which 1591 are male and 1238 are female, 21.97% of the total population, are in the education system. Of which, total enrollment of student are in, 169 nursery or pri school, 151 kindergarten, 1060 elementary school, 948 high school and 501 College graduate school.

RankCityCountyTotal Area mi2Land Area mi2Water Area mi2PopulationDensity mi2Per capita IncomeHouse hold Income
1Belknap VillageJohnson County1.031.030133128.61331925625
2Buncombe VillageJohnson County1.211.210186153.91497531500
3Cypress VillageJohnson County0.750.750271362.71384930208
4Goreville VillageJohnson County1.641.630.01938575.31649133750
5New Burnside VillageJohnson County1.051.050242229.41270931591
6Simpson VillageJohnson County0.520.52054103.41332523125
7Vienna CityJohnson County2.252.240.011234550.81366221702
YearPopulation
April 2000 census12878
April 2000 Estimate12880
July 2000 Estimate12920
July 2001 Estimate13021
July 2002 Estimate12718
July 2003 Estimate13449
July 2004 Estimate13512
July 2005 Estimate13493
July 2006 Estimate13695
July 2007 Estimate13724
July 2008 Estimate13731
SchoolMaleFemaleTotal
Nursery school7099169
Kindergarten10546151
Elementary school5475131060
High school617331948
College or graduate school252249501
PlaceMedian household incomeMedian family incomePer capita income
Johnson County, Illinois$33326$40275$17990
Illinois, United States$46590$55545$23104
United States$41994$50046$21587