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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
Tulsa County is the second most populous county in the U.S. state of Oklahoma behind Oklahoma County. Founded in 1850, it was named after established city of Tulsa. As of the 2010 census, the population is 603,403. The county seat is Tulsa, which is also the county's largest city.
Tulsa County is notable for being the most densely populated county in the State. Tulsa County also ranks as having the highest-income as well.
Timeline
| Date | Event | Source
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| 1907 | County formed | Source:Red Book: American State, County, and Town Sources
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| 1907 | Court records recorded | Source:Red Book: American State, County, and Town Sources
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| 1907 | First census | Source:Population of States and Counties of the United States: 1790-1990
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| 1907 | Land records recorded | Source:Red Book: American State, County, and Town Sources
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| 1907 | Marriage records recorded | Source:Red Book: American State, County, and Town Sources
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| 1907 | No significant boundary changes after this year | Source:Population of States and Counties of the United States: 1790-1990
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| 1907 | Probate records recorded | Source:Red Book: American State, County, and Town Sources
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| 1908 | 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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| 1907 | 21,693
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| 1910 | 34,995
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| 1920 | 109,023
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| 1930 | 187,574
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| 1940 | 193,363
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| 1950 | 251,686
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| 1960 | 346,038
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| 1970 | 401,663
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| 1980 | 470,593
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| 1990 | 503,341
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Research Tips
External links
www.rootsweb.com/~oktulsa/
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