Christian County is a county located in the U.S. state of Illinois. As of the 2010 census, the population was 34,800. Its county seat is Taylorville.
According to the U.S. Census Bureau, the county has a total area of 716 square miles (1,850 km), of which 709 square miles (1,840 km) is land and 6.3 square miles (16 km) (0.9%) is water.
The county is bounded on the north by Sangamon River, and intersected by the south fork of that stream.
As of the 2010 United States Census, there were 34,800 people, 14,055 households, and 9,211 families residing in the county. The population density was 49.1 inhabitants per square mile (19.0/km). There were 15,563 housing units at an average density of 21.9 per square mile (8.5/km). The racial makeup of the county was 96.6% white, 1.4% black or African American, 0.5% Asian, 0.1% American Indian, 0.4% from other races, and 0.9% from two or more races. Those of Hispanic or Latino origin made up 1.4% of the population. In terms of ancestry, 21.9% were German, 12.7% were Irish, 10.6% were American, and 9.9% were English.
Of the 14,055 households, 30.1% had children under the age of 18 living with them, 50.1% were married couples living together, 10.3% had a female householder with no husband present, 34.5% were non-families, and 29.9% of all households were made up of individuals. The average household size was 2.36 and the average family size was 2.90. The median age was 41.6 years.
The median income for a household in the county was $41,712 and the median income for a family was $52,680. Males had a median income of $42,897 versus $30,027 for females. The per capita income for the county was $21,519. About 12.7% of families and 16.6% of the population were below the poverty line, including 28.6% of those under age 18 and 9.4% of those age 65 or over.
Christian County Illinois neighborhoods include: Fairview, Kenton Addition, North Cherokee, Pleasant View, Sunset, Taylorville