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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
Polk County is a county located in the U.S. state of Iowa. The population was 430,640 in the 2010 census, an increase from 374,601 in the 2000 census, making it the most populous county in Iowa.[1][2] The county seat is Des Moines, which is also the capital city of Iowa. Polk County is one of the five counties that make up the Des Moines–West Des Moines Metropolitan Statistical Area.
Timeline
| Date | Event | Source
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| 1846 | County formed | Source:Red Book: American State, County, and Town Sources
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| 1846 | Court records recorded | Source:Red Book: American State, County, and Town Sources
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| 1846 | Land records recorded | Source:Red Book: American State, County, and Town Sources
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| 1846 | Marriage records recorded | Source:Red Book: American State, County, and Town Sources
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| 1846 | Probate records recorded | Source:Red Book: American State, County, and Town Sources
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| 1850 | First census | Source:Population of States and Counties of the United States: 1790-1990
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| 1860 | No significant boundary changes after this year | Source:Population of States and Counties of the United States: 1790-1990
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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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| 1850 | 4,513
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| 1860 | 11,625
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| 1870 | 27,857
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| 1880 | 42,395
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| 1890 | 65,410
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| 1900 | 82,624
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| 1910 | 110,438
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| 1920 | 154,029
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| 1930 | 172,837
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| 1940 | 195,835
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| 1950 | 226,010
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| 1960 | 266,315
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| 1970 | 286,101
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| 1980 | 303,170
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| 1990 | 327,140
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Research Tips
External links
http://iagenweb.org/polk/
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