Rock Island County, Illinois
Rock Island County is a county in the U.S. state of Illinois. In the 2010 census, 147,546 people lived there. The county seat is Rock Island.
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| Footnotes | ‡This populated place also has portions in an adjacent county or counties | |
This short article about a place or feature in the United States can be made longer. You can help Wikipedia by adding to it.| International | |
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