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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. As of the 2010 census, the population was 45,200. Its county seat is Brookville. The county was established on March 26, 1804, from part of Lycoming County and later organized in 1830. It is named for President Thomas Jefferson. It is home to Punxsutawney Phil, the most famous 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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