Jefferson County, Kansas

Jefferson County (county code JF) is a located in Northeast, in the. The population was estimated to be 18,848 in the year 2006. Its is, and its most populous city is. The county along with, , , and counties is included in the , which had an estimated population of 226,268 in the year 2003.

History
Settlement of the county was slowed by events prior to and during the, but the present day of  (3 miles northwest of  on the ) was the first established in 1851 by  settlers who initially refused to accompany the main group led by  to the. The settlement was first abandoned due to the violence resulting from the but was re-established when the Civil War ended.

Geography
According to the, the county has a total area of 1,442 (557 ), of which 1,389 km² (536 sq mi) is land and 54 km² (21 sq mi), or 3.74%, is water.

Adjacent counties

 * (north)
 * (east)
 * (south)
 * (southwest)
 * (northwest)

Demographics
Jefferson County's population was estimated to be 18,848 in the year 2006, an increase of 381, or +2.1%, over the previous six years.

As of the, there were 18,426 people, 6,830 households, and 5,190 families residing in the county. The was 13/km² (34/sq mi). There were 7,491 housing units at an average density of 5/km² (14/sq mi). The of the county was 96.70%, 0.92% , 0.37%  or , 0.17% , 0.01% , 0.42% from other races, and 1.41% from. or of any race were 1.28% of the population.



There were 6,830 s out of which 35.70% had children under the age of 18 living with them, 65.20% were living together, 7.00% had a female householder with no husband present, and 24.00% were non-families. 20.10% of all households were made up of individuals and 9.30% had someone living alone who was 65 years of age or older. The average household size was 2.66 and the average family size was 3.07.

In the county the population was spread out with 27.40% under the age of 18, 7.00% from 18 to 24, 28.00% from 25 to 44, 24.90% from 45 to 64, and 12.80% who were 65 years of age or older. The median age was 38 years. For every 100 females there were 102.60 males. For every 100 females age 18 and over, there were 98.90 males.

The in the county was $45,535, and the median income for a family was $50,557. Males had a median income of $36,174 versus $25,468 for females. The for the county was $19,373. About 5.30% of families and 6.70% of the population were below the, including 6.90% of those under age 18 and 7.70% of those age 65 or over.

Incorporated cities
Name and population (2006 estimate):
 * , 1,190
 * , 1,127 (county seat)
 * , 884
 * , 832
 * , 713
 * , 590
 * , 570
 * , 567

Townships
Jefferson County is divided into twelve. None of the cities within the county are considered governmentally independent, and all figures for the townships include those of the cities. In the following table, the population center is the largest city (or cities) included in that township's population total, if it is of a significant size.

Unified school districts

 * Valley Falls USD 338
 * Jefferson County USD 339
 * Jefferson West USD 340
 * Oskaloosa USD 341
 * McLouth USD 342
 * Perry USD 343