Rock Island County, Illinois
|Rock Island County, Illinois|
Rock Island County Courthouse
Location in the state of Illinois
Illinois's location in the U.S.
|• Total||451.29 sq mi (1,169 km2)|
|• Land||427.64 sq mi (1,108 km2)|
|• Water||23.65 sq mi (61 km2), 5.24%|
|• Density||350/sq mi (135/km²)|
|Time zone||Central: UTC-6/-5|
Rock Island County is a county located in the U.S. state of Illinois. According to the 2010 census, it had a population of 152,046, which is an increase of 1.8% from 149,374 in 2000. Its county seat is Rock Island.
According to the 2010 census, the county has a total area of 451.29 square miles (1,168.8 km2), of which 427.64 square miles (1,107.6 km2) (or 94.76%) is land and 23.65 square miles (61.3 km2) (or 5.24%) is water.
- Interstate 74
- Interstate 80
- Interstate 88
- Interstate 280
- U.S. Highway 6
- U.S. Highway 67
- U.S. Highway 150
- Illinois Route 2 (formerly)
- Illinois Route 5
- Illinois Route 84
- Illinois Route 92
- Illinois Route 94
- Illinois Route 192
Andalusia, Blackhawk, Bowling, Buffalo Prairie, Canoe Creek, Coal Valley, Coe, Cordova, Drury, Edgington, Hampton, Milan,East Moline, Moline, Port Byron, Rock Island, Rural, Silvis, South Moline, South Rock Island, Zuma
- Clinton County, Iowa (north) across the Mississippi River
- Whiteside County (northeast)
- Henry County (southeast)
- Mercer County (south)
- Louisa County, Iowa (southwest) across the Mississippi River
- Muscatine County, Iowa (west) across the Mississippi River
- Scott County, Iowa (northwest) across the Mississippi River
National protected area
As of the census of 2000, there were 149,374 people, 60,712 households, and 39,159 families residing in the county. The population density was 350 people per square mile (135/km²). There were 64,489 housing units at an average density of 151 per square mile (58/km²). The racial makeup of the county was 85.52% White, 7.54% Black or African American, 0.27% Native American, 1.02% Asian American, 0.03% Pacific Islander, 3.76% from other races, and 1.86% from two or more races. 8.56% of the population were Hispanic or Latino of any race. 23.1% were of German, 10.3% Irish, 8.4% American, 7.2% English, 6.6% Swedish and 5.5% Belgian ancestry.
There were 60,712 households out of which 28.90% had children under the age of 18 living with them, 49.10% were married couples living together, 11.60% had a female householder with no husband present, and 35.50% were non-families. 30.20% of all households were made up of individuals and 12.50% had someone living alone who was 65 years of age or older. The average household size was 2.38 and the average family size was 2.97.
In the county the population was spread out with 23.80% under the age of 18, 10.00% from 18 to 24, 27.30% from 25 to 44, 23.80% from 45 to 64, and 15.10% who were 65 years of age or older. The median age was 38 years. For every 100 females there were 94.40 males. For every 100 females age 18 and over, there were 91.40 males.
The median income for a household in the county was $38,608, and the median income for a family was $47,956. Males had a median income of $35,998 versus $24,234 for females. The per capita income for the county was $20,164. About 8.10% of families and 10.70% of the population were below the poverty line, including 15.70% of those under age 18 and 6.80% of those age 65 or over.
Cities and towns
- Buffalo Prairie
- Campbell's Island (unincorporated)
- Carbon Cliff
- Castle Junction
- Coal Valley (partial)
- Coyne Center
- East Moline
- Ginger Hill
- Illinois City
- Oak Grove
- Port Byron
- Rapids City
- Rock Island
- Rock Island Arsenal (CDP)
- Taylor Ridge
Rock Island County is divided into these eighteen townships:
Climate and weather
|Rock Island, Illinois|
|Climate chart (explanation)|
In recent years, average temperatures in the county seat of Rock Island have ranged from a low of 13 °F (−11 °C) in January to a high of 85 °F (29 °C) in July, although a record low of −22 °F (−30 °C) was recorded in February 1996 and a record high of 103 °F (39 °C) was recorded in July 2006. Average monthly precipitation ranged from 1.28 inches (33 mm) in January to 4.75 inches (121 mm) in June.
- National Register of Historic Places listings in Rock Island County, Illinois
- Quad City International Airport
- "Rock Island County QuickFacts". United States Census Bureau. Retrieved 2011-11-05.
- "Find a County". National Association of Counties. Retrieved 2011-06-07.
- United States Office of Management and Budget. "Update of Statistical Area Definitions and Guidance on Their Uses" (PDF). pp. 5, 36. Archived from the original on 2006-05-14. Retrieved 2006-07-21.
- "Census 2010 U.S. Gazetteer Files: Counties". United States Census. Retrieved 2011-11-05.
- Rock Island, the island, History: Introduction
- "U.S. Decennial Census". Census.gov. Retrieved July 28, 2013.
- "Annual Estimates of the Resident Population: April 1, 2010 to July 1, 2012". Census.gov. Retrieved July 28, 2013.
- "World Airline Directory." Flight International. March 30, 1985. 98. "Head Office: PO Box 949, Quad City Airport, Moline, Illinois 61265, USA."
- "Monthly Averages for Rock Island, Illinois". The Weather Channel. Retrieved 2011-01-27.
- Portrait and Biographical Album of Rock Island County, Illinois: Containing Full-Page Portraits and Biographical Sketches of Prominent and Representative Citizens of the County, Together with Portraits and Biographies of All the Governors of Illinois, and of the Presidents of the United States; Also Containing a History of the County, from its Earliest Settlement to the Present Time. Chicago: Biographical Publishing Co., 1885.
||Scott County, Iowa||Clinton County, Iowa||Whiteside County|
|Muscatine County, Iowa|
|Louisa County, Iowa||Mercer County||Henry County|