Mahaska County

administration
The Mahaska County Courthouse in Oskaloosa, listed on NRHP No. 81000255
US state :	Iowa
Administrative headquarters :	Oskaloosa
Address of the administrative headquarters:	County Courthouse 106 South 1st Street Oskaloosa, IA 52577-3101
Foundation :	February 17, 1843
Made up from:	Indian country
Area code :	001 641
Demographics
Residents :	22,381 (2010)
Population density :	15.1 inhabitants / km ²
geography
Total area :	1485 km²
Water surface :	7 km²
map

Website : www.mahaskacounty.org

The Mahaska County is a county in the US state of Iowa . At the 2010 census , the county had 22,381 residents and a population density of 15.1 people per square kilometer. The county seat is Oskaloosa , named after the wife of the Indian chief Osceola.

geography

The county is located in southeastern Iowa and is traversed by the Des Moines River . It has an area of 1,485 square kilometers, of which seven square kilometers are water. The following counties border Mahaska County:

Jasper County	Poweshiek County
Marion County		Keokuk County
Monroe County		Wapello County

history

Mahaska

Mahaska County was formed on February 17, 1843 on former Indian land. It was named after Mahaska (1784-1834), a chief of the Iowa Indian people .

It has been under self-administration since February 5, 1844. The county was the first in Iowa to have a sheriff and a magistrate.

The first courthouse was completed in January 1846. The second was opened on February 27, 1886. The first school, a small wooden hut about 2 km east of Oskaloosa, opened on September 16, 1844 and in 1846 the Cumberland Presbyterian Church was built as the first church . On July 2, 1850, the first edition of the Iowa Herald , now the Oskaloosa Herald, appeared and in 1864 the first rails were laid by the Des Moines Valley Railroad through the county.

46 of the county's structures and sites are on the National Register of Historic Places .

Demographic data

growth of population
Census	Residents	± in%
1850	5989	-
1860	14,816	147.4%
1870	22,508	51.9%
1880	25.202	12%
1890	28,805	14.3%
1900	34,273	19%
1910	29,860	-12.9%
1920	26,270	-12%
1930	25,804	-1.8%
1940	26,485	2.6%
1950	24,672	-6.8%
1960	23,602	-4.3%
1970	22,177	-6%
1980	22,867	3.1%
1990	21,522	-5.9%
2000	22,335	3.8%
2010	22,381	0.2%
Before 1900 1900–1990 2000–2010

As of the 2010 census , Mahaska County had 22,381 people in 8,932 households. The population density was 15.1 inhabitants per square kilometer.

The racial the population was composed of 95.7 percent white, 1.1 percent African American, 0.3 percent Native American, 1.1 percent Asian and other ethnic groups; 1.1 percent were descended from two or more races. Hispanic or Latino of any race was 1.6 percent of the population.

Statistically, 2.40 people lived in each of the 8,932 households.

24.3 percent of the population were under 18 years old, 59.6 percent were between 18 and 64 and 16.1 percent were 65 years or older. 49.7 percent of the population were female.

The median income for a household was 45,021 USD . The per capita income was $ 22,027. 13.0 percent of the population lived below the poverty line.