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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 Iowa. It was named in honor of Delaware. The population was 17,764 in the 2010 census, a decline from 18,404 in the 2000 census.[1][2] The county seat is Manchester.
Timeline
| Date | Event | Source
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| 1837 | County formed | Source:Red Book: American State, County, and Town Sources
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| 1840 | First census | Source:Population of States and Counties of the United States: 1790-1990
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| 1847 | Land records recorded | Source:Red Book: American State, County, and Town Sources
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| 1850 | No significant boundary changes after this year | Source:Population of States and Counties of the United States: 1790-1990
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| 1851 | Marriage records recorded | Source:Red Book: American State, County, and Town Sources
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| 1853 | Probate records recorded | Source:Red Book: American State, County, and Town Sources
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| 1880 | 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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| 1840 | 168
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| 1850 | 1,759
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| 1860 | 11,024
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| 1870 | 17,432
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| 1880 | 17,950
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| 1890 | 17,349
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| 1900 | 19,185
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| 1910 | 17,888
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| 1920 | 18,183
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| 1930 | 18,122
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| 1940 | 18,487
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| 1950 | 17,734
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| 1960 | 18,483
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| 1970 | 18,770
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| 1980 | 18,933
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| 1990 | 18,035
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Research Tips
External links
www.rootsweb.com/~iadelawa/
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