Named for Charles Carroll Congressional district 17th Website www.carroll-county.net Founded 1839 County seat Mount Carroll | Largest city Savanna Time zone Central: UTC-6/-5 Area 1,207 km² Population 14,910 (2013) | |
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Rivers Mississippi River, Plum River, Apple River, Johnson Creek Destinations Mississippi River, Savanna, Mount Carroll, Thomson, Lake Carroll Points of interest Mississippi Palisades State Park, Thomson Causeway Recreatio, Savanna Park District, Raven's Grin Inn, Mississippi Palisades ‑ National | ||
Carroll County is a county located in the U.S. state of Illinois. As of the 2010 census, the population was 15,387. Its county seat is Mount Carroll.
Contents
- Map of Carroll County IL USA
- History
- Geography
- Adjacent counties
- National protected area
- Major highways
- Climate and weather
- Demographics
- Education
- Cities
- Villages
- Townships
- Notable people
- References
Map of Carroll County, IL, USA
History
Carroll County was formed in 1839 out of Jo Daviess County. The county is named for Charles Carroll who signed the Declaration of Independence. Carroll, who died in 1832, was the last signer to die.
Geography
According to the U.S. Census Bureau, the county has a total area of 466 square miles (1,210 km2), of which 445 square miles (1,150 km2) is land and 22 square miles (57 km2) (4.6%) is water. The Mississippi Palisades State Park is in this county, just north of the city of Savanna. The Savanna Army Depot is located partly in this county.
Adjacent counties
National protected area
Major highways
Climate and weather
In recent years, average temperatures in the county seat of Mount Carroll have ranged from a low of 7 °F (−14 °C) in January to a high of 85 °F (29 °C) in July, although a record low of −31 °F (−35 °C) was recorded in January 1910 and a record high of 108 °F (42 °C) was recorded in July 1936. Average monthly precipitation ranged from 1.43 inches (36 mm) in January to 4.77 inches (121 mm) in June.
Demographics
As of the 2010 United States Census, there were 15,387 people, 6,622 households, and 4,343 families residing in the county. The population density was 34.6 inhabitants per square mile (13.4/km2). There were 8,437 housing units at an average density of 19.0 per square mile (7.3/km2). The racial makeup of the county was 96.9% white, 0.8% black or African American, 0.3% Asian, 0.3% American Indian, 0.6% from other races, and 1.1% from two or more races. Those of Hispanic or Latino origin made up 2.8% of the population. In terms of ancestry, 40.4% were German, 14.0% were Irish, 11.2% were English, and 10.6% were American.
Of the 6,622 households, 26.3% had children under the age of 18 living with them, 53.1% were married couples living together, 8.2% had a female householder with no husband present, 34.4% were non-families, and 29.8% of all households were made up of individuals. The average household size was 2.29 and the average family size was 2.80. The median age was 46.5 years.
The median income for a household in the county was $44,805 and the median income for a family was $55,341. Males had a median income of $42,421 versus $27,552 for females. The per capita income for the county was $25,914. About 7.8% of families and 11.7% of the population were below the poverty line, including 18.4% of those under age 18 and 5.8% of those age 65 or over.
Education
Cities
Villages
Townships
Carroll County is divided into these twelve townships: