Jefferson County, Montana



Jefferson County is a located in the  of. As of, the population is 10,049. Its is.

Geography
According to the, the county has a total area of 4,296 (1,659 ). 4,291 km² (1,657 sq mi) of it is land and 6 km² (2 sq mi) of it (0.13%) is water.

Adjacent Counties

 * - north
 * - east
 * - southeast
 * - south
 * - west
 * - west
 * - northwest

Demographics
As of the of 2000, there were 10,049 people, 3,747 households, and 2,847 families residing in the county. The was 2/km² (6/sq mi). There were 4,199 housing units at an average density of 1/km² (2/sq mi). The racial makeup of the county was 96.07%, 0.14% or , 1.26% , 0.42% , 0.07% , 0.38% from , and 1.66% from two or more races. 1.48% of the population were or  of any race. 22.9% were of, 13.1% , 12.9% , 7.9% and 5.3%  ancestry according to.

There were 3,747 households out of which 35.60% had children under the age of 18 living with them, 67.10% were living together, 5.90% had a female householder with no husband present, and 24.00% were non-families. 20.20% of all households were made up of individuals and 7.30% had someone living alone who was 65 years of age or older. The average household size was 2.62 and the average family size was 3.03.

In the county the population was spread out with 27.80% under the age of 18, 5.20% from 18 to 24, 26.80% from 25 to 44, 29.90% from 45 to 64, and 10.30% who were 65 years of age or older. The median age was 40 years. For every 100 females there were 100.80 males. For every 100 females age 18 and over, there were 100.40 males.

The median income for a household in the county was $41,506, and the median income for a family was $48,912. Males had a median income of $34,753 versus $25,011 for females. The for the county was $18,250. About 6.70% of families and 9.00% of the population were below the, including 10.40% of those under age 18 and 9.60% of those age 65 or over.