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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
Washington County is a county in the U.S. state of Wisconsin. As of the 2020 census, the population was 136,761.[1] Its county seat is West Bend. The county was created from Wisconsin Territory in 1836 and organized in 1845. It was named after President George Washington.
Washington County is part of the Milwaukee-Waukesha-West Allis, WI Metropolitan Statistical Area.
Timeline
| Date | Event | Source
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| 1835 | Land records recorded | Source:Red Book: American State, County, and Town Sources
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| 1836 | County formed | Source:Red Book: American State, County, and Town Sources
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| 1840 | First census | Source:Population of States and Counties of the United States: 1790-1990
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| 1845 | Probate records recorded | Source:Red Book: American State, County, and Town Sources
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| 1846 | Marriage records recorded | Source:Red Book: American State, County, and Town Sources
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| 1855 | Court records recorded | Source:Red Book: American State, County, and Town Sources
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| 1859 | Birth 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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Population History
- source: Source:Population of States and Counties of the United States: 1790-1990
| Census Year | Population
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| 1840 | 343
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| 1850 | 19,485
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| 1860 | 23,622
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| 1870 | 23,919
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| 1880 | 23,442
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| 1890 | 22,751
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| 1900 | 23,589
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| 1910 | 23,784
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| 1920 | 25,713
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| 1930 | 26,551
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| 1940 | 28,430
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| 1950 | 33,902
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| 1960 | 46,119
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| 1970 | 63,839
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| 1980 | 84,848
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| 1990 | 95,328
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