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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. As of the 2020 census, the population was 17,488. The county seat is Manchester. The county takes its name after the U.S. state of Delaware.
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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Cemeteries
Cemeteries of Delaware County, Iowa, United States
Research Tips
External links
www.rootsweb.com/~iadelawa/
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