Norton County (standard abbreviation: NT) is a county located in the U.S. state of Kansas. As of the 2010 census, the county population was 5,671 with a 2018 estimate of 5,430. The largest city and county seat is Norton. The county was established in 1867 and named for Orloff Norton, captain of Company L, 15th Kansas Militia Infantry Regiment.
According to the U.S. Census Bureau, the county has a total area of 881 square miles (2,280 km), of which 878 square miles (2,270 km) is land and 3.2 square miles (8.3 km) (0.4%) is water.
As of the 2000 US census, there were 5,953 people, 2,266 households, and 1,470 families residing in the county. The population density was 7 people per square mile (3/km²). There were 2,673 housing units at an average density of 3 per square mile (1/km²). The racial makeup of the county was 93.35% White, 4.05% Black or African American, 0.44% Native American, 0.42% Asian, 0.02% Pacific Islander, 1.02% from other races, and 0.71% from two or more races. 2.37% of the population were Hispanic or Latino of any race.
There were 2,266 households out of which 28.20% had children under the age of 18 living with them, 55.50% were married couples living together, 7.00% had a female householder with no husband present, and 35.10% were non-families. 32.30% of all households were made up of individuals and 17.90% had someone living alone who was 65 years of age or older. The average household size was 2.28 and the average family size was 2.89.
In the county, the population was spread out with 22.00% under the age of 18, 7.70% from 18 to 24, 28.30% from 25 to 44, 22.30% from 45 to 64, and 19.60% who were 65 years of age or older. The median age was 40 years. For every 100 females there were 122.10 males. For every 100 females age 18 and over, there were 122.90 males.
The median income for a household in the county was $31,050, and the median income for a family was $37,036. Males had a median income of $25,983 versus $20,381 for females. The per capita income for the county was $16,835. About 6.10% of families and 10.50% of the population were below the poverty line, including 12.70% of those under age 18 and 8.20% of those age 65 or over.