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- source: Getty Thesaurus of Geographic Names
- source: Family History Library Catalog
- the text in this section is copied from an article in Wikipedia
Atchison County is the northwesternmost county in the U.S. state of Missouri. As of the 2020 census, the county had a population of 5,305. Its county seat is Rock Port. It was originally known as Allen County when it was detached from Holt County in 1843. The county was officially organized on February 14, 1845, and named for U.S. Senator David Rice Atchison from Missouri.
Timeline
| Date | Event | Source
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| 1845 | County formed | Source:Red Book: American State, County, and Town Sources
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| 1845 | Court records recorded | Source:Red Book: American State, County, and Town Sources
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| 1845 | Land records recorded | Source:Red Book: American State, County, and Town Sources
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| 1845 | Marriage records recorded | Source:Red Book: American State, County, and Town Sources
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| 1845 | Probate records recorded | Source:Red Book: American State, County, and Town Sources
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| 1850 | First census | Source:Population of States and Counties of the United States: 1790-1990
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| 1850 | No significant boundary changes after this year | Source:Population of States and Counties of the United States: 1790-1990
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| 1883 | 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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| 1850 | 1,678
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| 1860 | 4,649
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| 1870 | 8,440
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| 1880 | 14,556
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| 1890 | 15,533
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| 1900 | 16,501
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| 1910 | 13,604
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| 1920 | 13,008
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| 1930 | 13,421
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| 1940 | 12,897
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| 1950 | 11,127
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| 1960 | 9,213
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| 1970 | 9,240
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| 1980 | 8,605
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| 1990 | 7,457
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Cemeteries
Cemeteries of Atchison County, Missouri, United States
Research Tips
External links
www.rootsweb.com/~moatchis/atchison.html
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