Saline County, Nebraska  Saline County is a county in the U.S. state of Nebraska. As of the 2010 United States Census, the population was 14,200. Its county seat is Wilber. In the Nebraska license plate system, Saline County is represented by the prefix 22 (it had the twenty-second-largest number of vehicles registered in the county when the license plate system was established in 1922). Saline County was formed in 1855 and organized in 1867. The first permanent settler arrived in 1858. The terrain of Saline County is composed of low rolling hills, sloping to the east-southeast. Most of the county's area is devoted to agriculture. The Big Blue River flows southward in the eastern part of the county. The middle and southern parts of the county are drained by Swan Creek and Turkey Creek, which combine and discharge into Big Blue River at the county's east boundary line close to its SE corner. The county has an area of , of which is land and (0.4%) is water. As of the 2000 United States Census, there were 13,843 people, 5,188 households, and 3,507 families in the county. The population density was 24 people per square mile (9/km²). There were 5,611 housing units at an average density of 10 per square mile (4/km²). The racial makeup of the county was 92.99% White, 0.36% Black or African American, 0.38% Native American, 1.70% Asian, 0.03% Pacific Islander, 3.40% from other races, and 1.15% from two or more races. 6.58% of the population were Hispanic or Latino of any race. There were 5,188 households out of which 32.80% had children under the age of 18 living with them, 56.50% were married couples living together, 7.20% had a female householder with no husband present, and 32.40% were non-families. 27.50% of all households were made up of individuals and 14.30% had someone living alone who was 65 years of age or older. The average household size was 2.50 and the average family size was 3.04. The county population contained 25.10% under the age of 18, 12.30% from 18 to 24, 25.00% from 25 to 44, 20.30% from 45 to 64, and 17.20% who were 65 years of age or older.