Science Fair Project Encyclopedia
Sioux County, Iowa
As of the census2 of 2000, there are 31,589 people, 10,693 households, and 8,062 families residing in the county. The population density is 16/km² (41/mi²). There are 11,260 housing units at an average density of 6/km² (15/mi²). The racial makeup of the county is 97.33% White, 0.20% Black or African American, 0.13% Native American, 0.59% Asian, 0.01% Pacific Islander, 1.20% from other races, and 0.53% from two or more races. 2.56% of the population are Hispanic or Latino of any race.
There are 10,693 households out of which 36.80% have children under the age of 18 living with them, 69.40% are married couples living together, 4.20% have a female householder with no husband present, and 24.60% are non-families. 22.20% of all households are made up of individuals and 11.40% have someone living alone who is 65 years of age or older. The average household size is 2.71 and the average family size is 3.19.
In the county the population is spread out with 27.10% under the age of 18, 15.20% from 18 to 24, 23.50% from 25 to 44, 19.10% from 45 to 64, and 15.00% who are 65 years of age or older. The median age is 33 years. For every 100 females there are 96.30 males. For every 100 females age 18 and over, there are 93.50 males.
The median income for a household in the county is $40,536, and the median income for a family is $45,846. Males have a median income of $31,548 versus $19,963 for females. The per capita income for the county is $16,532. 6.40% of the population and 4.60% of families are below the poverty line. Out of the total population, 7.90% of those under the age of 18 and 6.80% of those 65 and older are living below the poverty line.
Cities and towns
- Orange City
- Rock Valley
- Sioux Center
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