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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
Plymouth County is a county located in the U.S. state of Iowa. As of the 2020 census, the population was 25,698. The county seat is Le Mars. Plymouth County was named after Plymouth, Massachusetts.
Plymouth County is part of the Sioux City, IA-NE-SD Metropolitan Statistical Area.
Timeline
Date | Event | Source
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1851 | County formed | Source:Red Book: American State, County, and Town Sources
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1856 | Land records recorded | Source:Red Book: American State, County, and Town Sources
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1860 | First census | Source:Population of States and Counties of the United States: 1790-1990
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1860 | Marriage records recorded | Source:Red Book: American State, County, and Town Sources
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1860 | No significant boundary changes after this year | Source:Population of States and Counties of the United States: 1790-1990
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1869 | Court records recorded | Source:Red Book: American State, County, and Town Sources
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1871 | Probate records recorded | Source:Red Book: American State, County, and Town Sources
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1880 | 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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1860 | 148
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1870 | 2,199
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1880 | 8,566
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1890 | 19,568
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1900 | 22,209
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1910 | 23,129
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1920 | 23,584
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1930 | 24,159
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1940 | 23,502
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1950 | 23,252
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1960 | 23,906
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1970 | 24,312
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1980 | 24,743
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1990 | 23,388
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Cemeteries
Cemeteries of Plymouth County, Iowa, United States
Research Tips
External links
www.rootsweb.com/~iaplymou/
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