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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
Delaware County is a county located in the U.S. state of Pennsylvania. As of 2010, the population was 558,979, making it Pennsylvania's fifth most populous county, behind Philadelphia, Allegheny, Montgomery, and Bucks counties.
Delaware County was created on September 26, 1789, from part of Chester County and named for the Delaware River. Its county seat, since 1851, has been Media. Chester City, prior to 1851, was the county seat of both Delaware County and, before that, of Chester County.
Delaware County consists of communities adjacent to the city of Philadelphia. Socioeconomically, Delaware County consists of mostly working class and middle-class communities and some upper-class neighborhoods.
of the county are occupied by the Ridley Creek State Park.
The county, immediately adjacent to and west of Philadelphia, is part of the Delaware Valley area. Delaware County is the only county covered in its entirety by area code 610.
Timeline
Population History
- source: Source:Population of States and Counties of the United States: 1790-1990
| Census Year | Population
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| 1790 | 9,483
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| 1800 | 12,809
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| 1810 | 14,734
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| 1820 | 14,810
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| 1830 | 17,323
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| 1840 | 19,791
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| 1850 | 24,679
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| 1860 | 30,597
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| 1870 | 39,403
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| 1880 | 56,101
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| 1890 | 74,683
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| 1900 | 94,762
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| 1910 | 117,906
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| 1920 | 173,084
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| 1930 | 280,264
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| 1940 | 310,756
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| 1950 | 414,234
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| 1960 | 553,154
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| 1970 | 600,035
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| 1980 | 555,007
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| 1990 | 547,651
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Research Tips
External links
- Outstanding guide to Delaware 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.co.delaware.pa.us/
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