Founded February 24, 1841 Population 16,182 (2013) | Congressional district 15th Area 937.6 km² | |
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Rivers Embarras River, Bonpas Creek, Fox River, Big Branch Colleges and Universities Olney Central College, Illinois Eastern Community Colleges | ||
Richland County is a county located in the U.S. state of Illinois. According to the 2010 census, it had a population of 16,233. Its county seat is Olney.
Contents
- Map of Richland County IL USA
- History
- Geography
- Climate and weather
- Major highways
- Adjacent counties
- Demographics
- City
- Villages
- Unincorporated communities
- Townships
- Notable people
- References
Map of Richland County, IL, USA
History
Richland County was established on February 24, 1824, out of portions of Clay and Lawrence counties.
Geography
According to the U.S. Census Bureau, the county has a total area of 362 square miles (940 km2), of which 360 square miles (930 km2) is land and 1.9 square miles (4.9 km2) (0.5%) is water.
Climate and weather
In recent years, average temperatures in the county seat of Olney have ranged from a low of 19 °F (−7 °C) in January to a high of 88 °F (31 °C) in July, although a record low of −25 °F (−32 °C) was recorded in February 1951 and a record high of 112 °F (44 °C) was recorded in July 1936. Average monthly precipitation ranged from 2.73 inches (69 mm) in February to 4.76 inches (121 mm) in May.
Major highways
Adjacent counties
Demographics
As of the 2010 United States Census, there were 16,233 people, 6,726 households, and 4,438 families residing in the county. The population density was 45.1 inhabitants per square mile (17.4/km2). There were 7,513 housing units at an average density of 20.9 per square mile (8.1/km2). The racial makeup of the county was 97.3% white, 0.7% Asian, 0.5% black or African American, 0.2% American Indian, 0.4% from other races, and 0.9% from two or more races. Those of Hispanic or Latino origin made up 1.3% of the population. In terms of ancestry, 29.6% were German, 11.7% were American, 11.4% were English, and 9.2% were Irish.
Of the 6,726 households, 28.9% had children under the age of 18 living with them, 51.7% were married couples living together, 9.6% had a female householder with no husband present, 34.0% were non-families, and 29.3% of all households were made up of individuals. The average household size was 2.36 and the average family size was 2.88. The median age was 42.1 years.
The median income for a household in the county was $41,917 and the median income for a family was $53,853. Males had a median income of $41,058 versus $31,296 for females. The per capita income for the county was $22,874. About 9.5% of families and 13.8% of the population were below the poverty line, including 15.1% of those under age 18 and 11.9% of those age 65 or over. Richland is the top ranked most affordable county in Illinois to buy a car and is on average $932 less expensive than other Illinois counties.
City
Villages
Unincorporated communities
Townships
Richland County is divided into nine townships: