Demographics Jefferson County, Kansas

population pyramid

jefferson county included in topeka, ks metropolitan statistical area.

at 2000 census, there 18,426 people, 6,830 households , 5,190 families residing in county. population density 34 per square mile (13/km²). there 7,491 housing units @ average density of 14 per square mile (5/km²). racial makeup of county 96.70% white, 0.92% native american, 0.37% black or african american, 0.17% asian, 0.01% pacific islander, 0.42% other races, , 1.41% 2 or more races. hispanic or latino of race 1.28% of population.

there 6,830 households of 35.70% had children under age of 18 living them, 65.20% married couples living together, 7.00% had female householder no husband present, , 24.00% non-families. 20.10% of households made of individuals , 9.30% had living alone 65 years of age or older. average household size 2.66 , average family size 3.07.

27.40% of population under age of 18, 7.00% 18 24, 28.00% 25 44, 24.90% 45 64, , 12.80% 65 years of age or older. median age 38 years. every 100 females there 102.60 males. every 100 females age 18 , over, there 98.90 males.

the median household income $45,535 , median family income $50,557. males had median income of $36,174 compared $25,468 females. per capita income county $19,373. 5.30% of families , 6.70% of population below poverty line, including 6.90% of under age 18 , 7.70% of age 65 or over.