Stafford County (standard abbreviation: SF) is a county located in the U.S. state of Kansas. As of the 2010 census, the county population was 4,437. Its county seat is St. John. The county is named in honor of Lewis Stafford, captain of Company E, First Kansas Infantry, who was killed at the Battle of Young’s Point in Madison Parish, Louisiana on June 7, 1863.
According to the U.S. Census Bureau, the county has a total area of 795 square miles (2,060 km), of which 792 square miles (2,050 km) is land and 2.9 square miles (7.5 km) (0.4%) is water.
As of the census of 2000, there were 4,789 people, 2,010 households, and 1,294 families residing in the county. The population density was 6 people per square mile (2/km²). There were 2,458 housing units at an average density of 3 per square mile (1/km²). The racial makeup of the county was 94.97% White, 0.15% Black or African American, 0.38% Native American, 0.13% Asian, 2.97% from other races, and 1.42% from two or more races. 5.41% of the population were Hispanic or Latino of any race.
There were 2,010 households out of which 29.90% had children under the age of 18 living with them, 55.90% were married couples living together, 5.90% had a female householder with no husband present, and 35.60% were non-families. 33.00% of all households were made up of individuals and 17.20% had someone living alone who was 65 years of age or older. The average household size was 2.34 and the average family size was 2.99.
In the county, the population was spread out with 26.30% under the age of 18, 5.40% from 18 to 24, 24.60% from 25 to 44, 22.50% from 45 to 64, and 21.20% who were 65 years of age or older. The median age was 41 years. For every 100 females there were 95.20 males. For every 100 females age 18 and over, there were 91.40 males.
The median income for a household in the county was $31,107, and the median income for a family was $38,235. Males had a median income of $27,328 versus $21,063 for females. The per capita income for the county was $16,409. About 8.70% of families and 11.80% of the population were below the poverty line, including 15.20% of those under age 18 and 8.90% of those age 65 or over.