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- the text in this section is copied from an article in Wikipedia
Adams County is the westernmost county in the U.S. state of Illinois. As of the 2020 census, the population was 65,737. Its county seat is Quincy. Adams County is part of the Quincy, IL–MO Micropolitan Statistical Area.
Adams County was formed in 1825 out of Pike County. Its name is in honor of the sixth President of the United States, John Quincy Adams.
Adams County contains 23 townships (all of which are represented by place pages here).
Timeline
| Date | Event | Source
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| 1817 | Land records recorded | Source:Red Book: American State, County, and Town Sources
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| 1825 | County formed | Source:Red Book: American State, County, and Town Sources
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| 1825 | Court records recorded | Source:Red Book: American State, County, and Town Sources
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| 1825 | Marriage records recorded | Source:Red Book: American State, County, and Town Sources
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| 1826 | Probate records recorded | Source:Red Book: American State, County, and Town Sources
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| 1830 | First census | Source:Population of States and Counties of the United States: 1790-1990
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| 1830 | No significant boundary changes after this year | Source:Population of States and Counties of the United States: 1790-1990
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| 1877 | 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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| 1830 | 2,186
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| 1840 | 14,476
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| 1850 | 26,508
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| 1860 | 41,323
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| 1870 | 56,362
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| 1880 | 59,135
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| 1890 | 61,888
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| 1900 | 67,058
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| 1910 | 64,588
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| 1920 | 62,188
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| 1930 | 62,784
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| 1940 | 65,229
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| 1950 | 64,690
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| 1960 | 68,467
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| 1970 | 70,861
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| 1980 | 71,622
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| 1990 | 66,090
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| 2000 | 68,277
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| 2010 | 67,103
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| 2020 | 65,737
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Cemeteries
Cemeteries of Adams County, Illinois, United States
Research Tips
- Outstanding guide to Adams 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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