Place:O'Brien, Iowa, United States

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NameO'Brien
Alt namesO'Briensource: Getty Vocabulary Program
O'Briensource: WeRelate abbreviation
TypeCounty
Located inIowa, United States     (1851 - )
source: Getty Thesaurus of Geographic Names
source: Family History Library Catalog


the text in this section is copied from an article in Wikipedia

O'Brien County is a county located in the U.S. state of Iowa. The population was 14,398 in the 2010 census, a decline of 4.7% from 15,102 in 2000.[1] The county seat is Primghar.

Contents

Timeline

Date Event Source
1851 County formed Source:Red Book: American State, County, and Town Sources
1857 Land records recorded Source:Red Book: American State, County, and Town Sources
1860 First census Source:Population of States and Counties of the United States: 1790-1990
1860 Marriage records recorded Source:Red Book: American State, County, and Town Sources
1860 No significant boundary changes after this year Source:Population of States and Counties of the United States: 1790-1990
1870 Court records recorded Source:Red Book: American State, County, and Town Sources
1880 Birth records recorded Source:Red Book: American State, County, and Town Sources

Population History

source: Source:Population of States and Counties of the United States: 1790-1990
Census Year Population
1860 8
1870 715
1880 4,155
1890 13,060
1900 16,985
1910 17,262
1920 19,051
1930 18,409
1940 19,293
1950 18,970
1960 18,840
1970 17,522
1980 16,972
1990 15,444

Research Tips

External links

www.rootsweb.com/~iaobrien/


This page uses content from the English Wikipedia. The original content was at O'Brien County, Iowa. The list of authors can be seen in the page history. As with WeRelate, the content of Wikipedia is available under the Creative Commons Attribution/Share-Alike License.