Obrien County, Iowa

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Obrien County is a county located in the United States of Iowa. According to the 2000 census it had a population of 41722 inhabitants. Its population in July 2008 was estimated to be about 13952, It is the 57th most populous county in the U.S. state of Iowa. It has total area of 449.07 square miles (1163.09 kmē), of which, 438.67 square miles (1136.15 kmē) of it is land and 10.4 square miles (26.94 kmē) of it is water, it is the 46th largest in terms of geographical size.


As of the census of 2000, there were 15102 people in the county, organized into 6001 households, and 4125 families living in the county. The population density was 95.1 people per square mile (36.72/kmē), it is the 56th most densely populated county in the U.S. state of Iowa. There were 6509 housing units at an average density of 38.3 per square mile (14.79/kmē). The average household size was 2.42 persons, and the average family size was 2.97 persons. In the county the population was spread out, with 24.8% under the age of 18, 7.8% from 18 to 24, 24.1% from 25 to 44, 22.1% from 45 to 64, and 21.1% who were 65 or older. For every 100 females there were 95.8 males. For every 100 females age 18 and over, there were 92.4 males. According to July 2008 Census Bureau estimates, the population of the county is 13952, The racial or ethnic makeup of the county was 13661 White, 76 Black or African American, 35 American Indian, 97 Asian, 1 Native Hawaiian, and 82 from two or more races.

Population 2000-2008

School Enrollment 2000

GDP 2000

The median income for a household in the county was $35758, it is the 57th wealthiest county in terms of median household income. The median income for a family in the county was $42959, it is Iowa's 57th wealthiest county by median family income. The per capita income for the county was $17281, making it the 61st wealthiest county by per capita income among the Iowa.

In 2000, 3545 pupils and students, of which 1782 are male and 1763 are female, 8.5% of the total population, are in the education system. Of which, total enrollment of student are in, 221 nursery or pri school, 176 kindergarten, 1759 elementary school, 1004 high school and 385 College graduate school.

Rank	City	County	Total Area mi2	Land Area mi2	Water Area mi2	Population	Density mi2	Per capita Income	House hold Income
1	Sheldon City	OBrien County, Sioux County	4.39	4.39	0	4914	1119.6	18254	34058

Year	Population
April 2000 census	15102
April 2000 Estimate	15102
July 2000 Estimate	15066
July 2001 Estimate	14881
July 2002 Estimate	14683
July 2003 Estimate	14587
July 2004 Estimate	14340
July 2005 Estimate	14249
July 2006 Estimate	14184
July 2007 Estimate	14060
July 2008 Estimate	13952

School	Male	Female	Total
Nursery school	113	108	221
Kindergarten	100	76	176
Elementary school	897	862	1759
High school	480	524	1004
College or graduate school	192	193	385

Place	Median household income	Median family income	Per capita income
OBrien County, Iowa	$35758	$42959	$17281
Iowa, United States	$39469	$48005	$19674
United States	$41994	$50046	$21587