In 1802, Spain returned most of the land to France, but keeping title to about 7,500 square miles. In 1803, most of the land for modern day Kansas was acquired by the United States from France as part of the 828,000 square mileLouisiana Purchase for 2.83 cents per acre. In 1854, the Kansas Territory was organized. In 1855, Wilson County was established and included what is now Wilson County and Montgomery County. It was named for Colonel Hiero T. Wilson. He was a successful Indian trader who had been the first white settler of Fort Scott, Kansas and had served as postmaster and sutler at the fort. He could speak Cherokee, Creek, and Osage and the Osage called him "Big White Chief". He was a delegate to the Lecompton Constitutional Convention.
Geography
According to the U.S. Census Bureau, the county has a total area of, of which is land and is water.
As of the census of 2000, there were 10,332 people, 4,203 households, and 2,849 families residing in the county. The population density was 18 people per square mile. There were 4,937 housing units at an average density of 9 per square mile. The racial makeup of the county was 96.78% White, 0.37% Black or African American, 0.88% Native American, 0.26% Asian, 0.04% Pacific Islander, 0.48% from other races, and 1.19% from two or more races. 1.67% of the population were Hispanic or Latino of any race. There were 4,203 households out of which 29.60% had children under the age of 18 living with them, 57.10% were married couplesliving together, 7.80% had a female householder with no husband present, and 32.20% were non-families. 29.10% of all households were made up of individuals and 15.80% had someone living alone who was 65 years of age or older. The average household size was 2.40 and the average family size was 2.96. In the county, the population was spread out with 25.40% under the age of 18, 7.40% from 18 to 24, 23.80% from 25 to 44, 23.40% from 45 to 64, and 19.90% who were 65 years of age or older. The median age was 41 years. For every 100 females there were 94.20 males. For every 100 females age 18 and over, there were 89.60 males. The median income for a household in the county was $29,747, and the median income for a family was $36,990. Males had a median income of $27,255 versus $18,670 for females. The per capita income for the county was $14,910. About 7.50% of families and 11.30% of the population were below the poverty line, including 13.40% of those under age 18 and 11.80% of those age 65 or over.
Government
Presidential elections
Wilson County is overwhelmingly Republican. No Democratic Presidential candidate has carried Wilson County since Franklin D. Roosevelt in 1932, and none have passed 36 percent since Jimmy Carter in 1976.
Laws
Following amendment to the Kansas Constitution in 1986, the county remained a prohibition, or "dry", county until 1998, when voters approved the sale of alcoholic liquor by the individual drink with a 30 percent food sales requirement.
Wilson County is divided into fifteen townships. The cities of Fredonia and Neodesha are considered governmentally independent and are excluded from the census figures for the townships. In the following table, the population center is the largest city included in that township's population total, if it is of a significant size.