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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
Black Hawk County is a county in the northeastern part of U.S. state of Iowa. As of the 2020 census, the population was 131,144, making it Iowa's fifth-most populous county. The county seat is Waterloo.
Black Hawk County is part of the Waterloo-Cedar Falls, IA Metropolitan Statistical Area.
Timeline
Date | Event | Source
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1843 | County formed | 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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1853 | Court records recorded | Source:Red Book: American State, County, and Town Sources
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1853 | Land records recorded | Source:Red Book: American State, County, and Town Sources
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1853 | Marriage records recorded | Source:Red Book: American State, County, and Town Sources
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1853 | 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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1850 | 135
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1860 | 8,244
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1870 | 21,706
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1880 | 23,913
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1890 | 24,219
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1900 | 32,399
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1910 | 44,865
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1920 | 56,570
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1930 | 69,146
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1940 | 79,946
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1950 | 100,448
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1960 | 122,482
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1970 | 132,916
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1980 | 137,961
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1990 | 123,798
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Cemeteries
Cemeteries of Black Hawk County, Iowa, United States
Research Tips
External links
www.rootsweb.com/~iablackh/
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