| Carroll County, Illinois | |
Location in the state of Illinois |
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Illinois's location in the U.S. |
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| Founded | 1839 |
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| Seat | Mount Carroll |
| Largest city | Savanna |
| Area - Total - Land - Water |
466.36 sq mi (1,208 km²) 444.81 sq mi (1,152 km²) 21.55 sq mi (56 km²), 4.62% |
| Population - (2010) - Density |
15,387 38/sq mi (14/km²) |
| Time zone | Central: UTC-6/-5 |
| Website | www.gocarrollcounty.com |
Carroll County is a county located in the U.S. state of Illinois. According to the 2010 census, it has a population of 15,387, which is a decrease of 7.7% from 16,674 in 2000.[1] Its county seat is Mount Carroll.[2]
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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.
According to the 2010 census, the county has a total area of 466.36 square miles (1,207.9 km2), of which 444.81 square miles (1,152.1 km2) (or 95.38%) is land and 21.55 square miles (55.8 km2) (or 4.62%) is water.[3] 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.
Carroll County is divided into these twelve townships:
| Historical populations | |||
|---|---|---|---|
| Census | Pop. | %± | |
| 1900 | 18,963 |
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| 1910 | 18,035 | −4.9% | |
| 1920 | 19,345 | 7.3% | |
| 1930 | 18,433 | −4.7% | |
| 1940 | 17,987 | −2.4% | |
| 1950 | 18,976 | 5.5% | |
| 1960 | 19,507 | 2.8% | |
| 1970 | 19,276 | −1.2% | |
| 1980 | 18,779 | −2.6% | |
| 1990 | 16,805 | −10.5% | |
| 2000 | 16,674 | −0.8% | |
| 2010 | 15,387 | −7.7% | |
| IL Counties 1900-1990 | |||
As of the census[4] of 2000, there were 16,674 people, 6,794 households, and 4,681 families residing in the county. The population density was 14/km² (38/sq mi). There were 7,945 housing units at an average density of 7/km² (18/sq mi). The racial makeup of the county was 96.94% White, 0.55% Black or African American, 0.24% Native American, 0.41% Asian, 0.03% Pacific Islander, 0.82% from other races, and 1.02% from two or more races. 2.04% of the population were Hispanic or Latino of any race. 42.4% were of German, 10.7% American, 9.8% Irish, 7.6% English and 5.0% Dutch ancestry according to Census 2000. 97.3% spoke English and 1.5% Spanish as their first language.
There were 6,794 households out of which 28.90% had children under the age of 18 living with them, 58.40% were married couples living together, 7.40% had a female householder with no husband present, and 31.10% were non-families. 27.30% of all households were made up of individuals and 13.90% had someone living alone who was 65 years of age or older. The average household size was 2.42 and the average family size was 2.93.
In the county the population was spread out with 24.30% under the age of 18, 6.60% from 18 to 24, 25.40% from 25 to 44, 24.50% from 45 to 64, and 19.30% who were 65 years of age or older. The median age was 41 years. For every 100 females there were 97.80 males. For every 100 females age 18 and over, there were 95.10 males.
The median income for a household in the county was $37,148, and the median income for a family was $43,685. Males had a median income of $31,318 versus $21,753 for females. The per capita income for the county was $18,688. About 7.40% of families and 9.60% of the population were below the poverty line, including 13.30% of those under age 18 and 5.90% of those age 65 or over.
| Mount Carroll, Illinois | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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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.[5]
| Jo Daviess County | Stephenson County | |||
| Jackson County, Iowa | Ogle County | |||
| Carroll County, Illinois | ||||
| Clinton County, Iowa | Whiteside County |
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