O'Brien County, Iowa

From Wikipedia, the free encyclopedia

O'Brien County, Iowa
Map
Location in the state of Iowa
Iowa's location in the U.S.
Statistics
Founded	information needed
Seat	Primghar
Area - Total - Land - Water	573 sq mi (1,485 km²) 573 sq mi (1,484 km²) 0 sq mi (0 km²), 0.03%
Population - (2000) - Density	15,102 26/sq mi (10/km²)
Time zone	Central: UTC-6/-5

O'Brien County is a county located in the U.S. state of Iowa. As of 2000, the population is 15,102. It is named for William Smith O'Brien, a leader for Irish independence in 1848, and is the only O'Brien County in the United States. Its county seat is Primghar.^[1]

1 Geography
- 1.1 Major highways
- 1.2 Adjacent counties
2 Demographics
3 Cities and towns
4 References

[edit] Geography

According to the U.S. Census Bureau, the county has a total area of 573 square miles (1,485 km²), of which, 573 square miles (1,484 km²) of it is land and 0 square miles (0 km²) of it (0.03%) is water.

[edit] Major highways

Iowa Highway 144

[edit] Adjacent counties

Osceola County (north)
Clay County (east)
Cherokee County (south)
Sioux County (west)

[edit] Demographics

2000 Census Age Pyramid for O'Brien County.

Historical populations
Census	Pop.	%±
1900	16,985	—
1910	17,262	1.6%
1920	19,051	10.4%
1930	18,409	-3.4%
1940	19,293	4.8%
1950	18,970	-1.7%
1960	18,840	-0.7%
1970	17,522	-7.0%
1980	16,972	-3.1%
1990	15,444	-9.0%
2000	15,102	-2.2%
IA Counties 1900-1990

As of the census^[2] of 2000, there were 15,102 people, 6,001 households, and 4,122 families residing in the county. The population density was 26 people per square mile (10/km²). There were 6,509 housing units at an average density of 11 per square mile (4/km²). The racial makeup of the county was 98.05% White, 0.34% Black or African American, 0.17% Native American, 0.51% Asian, 0.01% Pacific Islander, 0.47% from other races, and 0.46% from two or more races. 1.77% of the population were Hispanic or Latino of any race.

There were 6,001 households out of which 30.40% had children under the age of 18 living with them, 61.00% were married couples living together, 4.90% had a female householder with no husband present, and 31.30% were non-families. 28.00% of all households were made up of individuals and 14.70% had someone living alone who was 65 years of age or older. The average household size was 2.42 and the average family size was 2.97.

In the county the population was spread out with 24.80% under the age of 18, 7.80% from 18 to 24, 24.10% from 25 to 44, 22.10% from 45 to 64, and 21.10% who were 65 years of age or older. The median age was 41 years. For every 100 females there were 95.80 males. For every 100 females age 18 and over, there were 92.40 males.

The median income for a household in the county was $35,758, and the median income for a family was $42,959. Males had a median income of $30,446 versus $20,391 for females. The per capita income for the county was $17,281. About 4.60% of families and 7.30% of the population were below the poverty line, including 7.70% of those under age 18 and 6.00% of those age 65 or over.