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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 located in the northeastern part of U.S. state of Iowa. The population was 131,090 in the 2010 census, an increase from 128,012 in 2000.[1][2] Black Hawk County has the fourth largest population for counties in the state. The majority of the county's population resides in the Waterloo-Cedar Falls urbanized area. Waterloo, the county seat, is located approximately east of I-35 at the intersection of U.S. Highways 20, 63 and 218. The city of Cedar Falls is located approximately eight miles west of Waterloo.
Black Hawk County is one of the three counties that make up the Waterloo-Cedar Falls 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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Research Tips
External links
www.rootsweb.com/~iablackh/
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