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- the text in this section is copied from an article in Wikipedia
Rock Island County is a county located in the U.S. state of Illinois, bounded on the west by the Mississippi River. According to the 2010 census, it had a population of 147,546. Its county seat is Rock Island; its largest city is neighboring Moline. Rock Island County is one of the four counties that make up the Davenport-Moline-Rock Island, IA-IL Metropolitan Statistical Area.
History
- the text in this section is copied from an article in Wikipedia
Rock Island County was formed in 1831 out of Jo Daviess County. It was named for Rock Island, an island in the Mississippi River now known as Arsenal Island.[1] The Rock River (which the Sauk and Fox Indians called Sinnissippi meaning "rocky waters") flows from Whiteside County and points further east and north and joins the Mississippi River at Rock Island. The Sinnissippi Mounds, dating from the Hopewell period and on the National Register of Historic Places are upriver at Sterling in Whiteside County.
Timeline
Date | Event | Source
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1831 | County formed | Source:Red Book: American State, County, and Town Sources
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1833 | Marriage records recorded | Source:Red Book: American State, County, and Town Sources
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1834 | Court records recorded | Source:Red Book: American State, County, and Town Sources
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1835 | Land records recorded | Source:Red Book: American State, County, and Town Sources
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1835 | Probate records recorded | Source:Red Book: American State, County, and Town Sources
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1840 | First census | Source:Population of States and Counties of the United States: 1790-1990
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1840 | No significant boundary changes after this year | Source:Population of States and Counties of the United States: 1790-1990
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1861 | Birth records recorded | Source:Red Book: American State, County, and Town Sources
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Population History
- source: Source:Population of States and Counties of the United States: 1790-1990
Census Year | Population
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1840 | 2,610
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1850 | 6,937
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1860 | 21,005
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1870 | 29,783
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1880 | 38,302
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1890 | 41,917
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1900 | 55,249
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1910 | 70,404
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1920 | 92,297
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1930 | 98,191
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1940 | 113,323
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1950 | 133,558
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1960 | 150,991
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1970 | 166,734
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1980 | 165,968
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1990 | 148,723
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Note: The Rock Island-Whiteside county boundary differed slightly in 1860 from its alignment in 1840-50 and 1870-1990.
Cemeteries
Cemeteries of Rock Island County, Illinois, United States
Research Tips
- Outstanding guide to Rock Island County family history and genealogy resources (FamilySearch Research Wiki). Birth, marriage, and death records, censuses, wills, deeds, county histories, cemeteries, churches, naturalizations, newspapers, libraries, and genealogical societies.
Resources
- source: Getty Thesaurus of Geographic Names
- source: Family History Library Catalog
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