Rock Island County

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Rock Island County, Illinois

1504 3rd Ave
Rock Island, IL 61201
Phone: (309) 786-4451

On the northwestern border of IL; organized Feb 9, 1831 from Jo Daviess County. Name Origin: For an island in the Mississippi River near the mouth of the Rock River

Area (sq mi):: 451.16 (land 426.75; water 24.40) Population per square mile: 346.40
Population 2005: 147,808 State rank: 14 Population change: 2000-20005 -1.00%; 1990-2000 0.40% Population 2000: 149,374 (White 81.50%; Black or African American 7.50%; Hispanic or Latino 8.60%; Asian 1.00%; Other 6.00%). Foreign born: 4.60%. Median age: 37.80
Income 2000: per capita $20,164; median household $38,608; Population below poverty level: 10.70% Personal per capita income (2000-2003): $26,716-$27,695
Unemployment (2004): 5.60% Unemployment change (from 2000): 0.20% Median travel time to work: 18.70 minutes Working outside county of residence: 24.30%
Cities with population over 10,000:
  • Moline (42,927)
  • Rock Island County seat (38,807)
  • East Moline (21,114)

  • See other counties in .
    Counties USA: A Directory of United States Counties, 3rd Edition. © 2006 by Omnigraphics, Inc.
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    References in periodicals archive ?
    Two banded killifish were collected in early November of 2012, while the authors were conducting a general survey near the mouth of Mill Creek in Rock Island County, Illinois. The sample was collected using a 120 volt AC electric seine for a total sample time of 53 minutes.
    Early Pennsylvanian geology and paleobotany of the Rock Island County, Illinois. Part 1: Geology.
    Intergovernmental and private business cooperation is the key to a new regional residential recycling drop-of program in Rock Island County, Illinois.