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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
Jefferson County is a county located in the U.S. state of Pennsylvania. In 2010, its population was 45,200. It was established on March 26, 1804, from part of Lycoming County and named for then-President Thomas Jefferson. Its county seat is Brookville. It is home to Punxsutawney Phil, the groundhog that predicts when spring will come every February 2 (Groundhog Day).
Timeline
Population History
- source: Source:Population of States and Counties of the United States: 1790-1990
| Census Year | Population
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| 1810 | 161
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| 1820 | 561
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| 1830 | 2,025
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| 1840 | 7,253
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| 1850 | 13,518
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| 1860 | 18,270
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| 1870 | 21,656
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| 1880 | 27,935
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| 1890 | 44,005
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| 1900 | 59,113
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| 1910 | 63,090
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| 1920 | 62,104
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| 1930 | 52,114
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| 1940 | 54,090
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| 1950 | 49,147
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| 1960 | 46,792
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| 1970 | 43,695
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| 1980 | 48,303
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| 1990 | 46,083
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Note: in 1850 Forest was reported with Jefferson.
Research Tips
External links
- Outstanding guide to Jefferson County family history and genealogy resources (FamilySearch Research Wiki). Birth, marriage, and death records, censuses, wills, deeds, county histories, cemeteries, churches, newspapers, libraries, and genealogical societies.
- www.jeffersoncountypa.com
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