Information by State |
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US Counties
| Illinois
| Rock Island
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Find a Lawyer in Rock Island County: |
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Rock Island County, Illinois (IL) |
Address: |
County Courthouse |
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210 15th Street |
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Rock Island, Illinois 61201-8612 |
County Seat: |
Rock Island |
Phone: |
309-786-4451 |
Website: |
www.co.rock-island.il.us |
Established: |
1831 |
Area: |
427 sq mi |
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Rock Island County, Illinois Communities: |
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Total Communities in Rock Island County, Illinois: 28 |
Population: |
146,284 |
145,230 |
144,293 |
143,477 |
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2015 * |
2016 * |
2017 * |
2018 * |
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147,546 |
147,462 |
147,699 |
147,688 |
147,090 |
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2010 |
2011 * |
2012 * |
2013 * |
2014 * |
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* (U.S. Census Estimate) |
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