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| Name | Washington |
| Alt names | Washington | source: Getty Vocabulary Program |
| Type | County |
| Coordinates | 39.5°N 81.417°W |
| Located in | Ohio, United States (1788 - ) |
| See also | Athens, Ohio, United States | Child county (source: Source:Population of States and Counties of the United States: 1790-1990) | | Belmont, Ohio, United States | Child county (source: Source:Population of States and Counties of the United States: 1790-1990) | | Fairfield, Ohio, United States | Child county (source: Source:Population of States and Counties of the United States: 1790-1990) | | Gallia, Ohio, United States | Child county (source: Source:Population of States and Counties of the United States: 1790-1990) | | Guernsey, Ohio, United States | Child county (source: Source:Population of States and Counties of the United States: 1790-1990) | | Knox, Ohio, United States | Child county (source: Source:Population of States and Counties of the United States: 1790-1990) | | Licking, Ohio, United States | Child county (source: Source:Population of States and Counties of the United States: 1790-1990) | | Monroe, Ohio, United States | Child county (source: Source:Population of States and Counties of the United States: 1790-1990) | | Morgan, Ohio, United States | Child county (source: Source:Population of States and Counties of the United States: 1790-1990) | | Muskingum, Ohio, United States | Child county (source: Source:Population of States and Counties of the United States: 1790-1990) | | Noble, Ohio, United States | Child county (source: Source:Population of States and Counties of the United States: 1790-1990) | | Perry, Ohio, United States | Child county (source: Source:Population of States and Counties of the United States: 1790-1990) | | Scioto, Ohio, United States | Child county (source: Source:Population of States and Counties of the United States: 1790-1990) | | Stark, Ohio, United States | Child county (source: Source:Population of States and Counties of the United States: 1790-1990) | | Tuscarawas, Ohio, United States | Child county (source: Source:Population of States and Counties of the United States: 1790-1990) |
- 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 located in the state of Ohio.
According to the 2010 census, it has a population of 61,778, which is a decrease of 2.3% from 63,251 in 2000. Its county seat is Marietta. The county, the oldest in the state, is named for George Washington. Washington County is included in the Parkersburg-Marietta-Vienna, West Virginia-Ohio Metropolitan Statistical Area.
Timeline
| Date | Event | Source
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| 1788 | County formed | Source:Red Book: American State, County, and Town Sources
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| 1788 | Land records recorded | Source:Red Book: American State, County, and Town Sources
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| 1789 | Probate records recorded | Source:Red Book: American State, County, and Town Sources
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| 1790 | Court records recorded | Source:Red Book: American State, County, and Town Sources
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| 1800 | First census | Source:Population of States and Counties of the United States: 1790-1990
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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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| 1867 | Birth records recorded | Source:Red Book: American State, County, and Town Sources
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| 1889 | Marriage 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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| 1800 | 5,427
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| 1810 | 5,991
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| 1820 | 10,425
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| 1830 | 11,731
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| 1840 | 20,823
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| 1850 | 29,540
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| 1860 | 36,268
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| 1870 | 40,609
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| 1880 | 43,244
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| 1890 | 42,380
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| 1900 | 48,245
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| 1910 | 45,422
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| 1920 | 43,049
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| 1930 | 42,437
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| 1940 | 43,537
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| 1950 | 44,407
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| 1960 | 51,689
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| 1970 | 57,160
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| 1980 | 64,266
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| 1990 | 62,254
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Research Tips
External links
www.washingtongov.org/
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