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Lyon County is the most northwesterly county of the U.S. state of Iowa. As of 2000, the population is 11,763. Its county seat is Rock Rapids, Iowa6. It is named in honor of Brigadier General Nathaniel Lyon, who served in The Mexican War and the Civil War. He was killed at the battle of Wilson's Creek, Missouri, on August 10, 1861, after which the county was named for him.
Geography
According to the U.S. Census Bureau, the county has a total area of 1,522 km² (588 mi²). 1,522 km² (588 mi²) of it is land and 0 km² (0 mi²) of it (0.02%) is water.
Adjacent counties
- Rock County, Minnesota (north)
- Nobles County, Minnesota (northeast)
- Osceola County (east)
- Sioux County (south)
- Lincoln County, South Dakota (west)
- Minnehaha County, South Dakota (northwest)
Demographics
As of the census2 of 2000, there were 11,763 people, 4,428 households, and 3,263 families residing in the county. The population density was 8/km² (20/mi²). There were 4,758 housing units at an average density of 3/km² (8/mi²). The racial makeup of the county was 99.13% White, 0.09% Black or African American, 0.14% Native American, 0.15% Asian, 0.01% Pacific Islander, 0.10% from other races, and 0.37% from two or more races. 0.36% of the population were Hispanic or Latino of any race.
There were 4,428 households out of which 34.80% had children under the age of 18 living with them, 67.10% were married couples living together, 4.40% had a female householder with no husband present, and 26.30% were non-families. 24.30% of all households were made up of individuals and 13.70% had someone living alone who was 65 years of age or older. The average household size was 2.61 and the average family size was 3.13.
In the county the population was spread out with 28.00% under the age of 18, 7.60% from 18 to 24, 24.60% from 25 to 44, 20.90% from 45 to 64, and 18.80% who were 65 years of age or older. The median age was 38 years. For every 100 females there were 98.40 males. For every 100 females age 18 and over, there were 94.60 males.
The median income for a household in the county was $36,878, and the median income for a family was $45,144. Males had a median income of $29,462 versus $19,385 for females. The per capita income for the county was $16,081. About 4.90% of families and 7.00% of the population were below the poverty line, including 7.90% of those under age 18 and 10.30% of those age 65 or over.
Cities and towns
"Lyon County, Iowa"