Buchanan County, Missouri

Buchanan County is a located in the  of. As of 2000, the population was 85,998. Its is. The county was originally named Roberts County, after settler Hiram Roberts, renamed in for, later. The county along with and  counties in Missouri and  is included in the, which had an estimated population of 122,306 in 2006.

Geography
According to the, the county has a total area of 1,074 (415 ). 1,061 km² (410 sq mi) of it is land and 13 km² (5 sq mi) of it (1.17%) is water.

Adjacent counties

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Demographics
As of the of 2000, there were 85,998 people, 33,557 households, and 21,912 families residing in the county. The was 81/km² (210/sq mi). There were 36,574 housing units at an average density of 34/km² (89/sq mi). The racial makeup of the county was 92.73%, 4.36% or , 0.42% , 0.45% , 0.02% , 0.65% from , and 1.37% from two or more races. 2.43% of the population were or  of any race.

There were 33,557 households out of which 30.60% had children under the age of 18 living with them, 49.30% were living together, 12.00% had a female householder with no husband present, and 34.70% were non-families. 28.90% of all households were made up of individuals and 12.50% had someone living alone who was 65 years of age or older. The average household size was 2.42 and the average family size was 2.98.

In the county the population was spread out with 24.30% under the age of 18, 11.00% from 18 to 24, 28.50% from 25 to 44, 21.20% from 45 to 64, and 15.00% who were 65 years of age or older. The median age was 36 years. For every 100 females there were 96.70 males. For every 100 females age 18 and over, there were 93.90 males.

The median income for a household in the county was $34,704, and the median income for a family was $42,408. Males had a median income of $31,697 versus $21,827 for females. The for the county was $17,882. About 8.50% of families and 12.20% of the population were below the, including 15.00% of those under age 18 and 9.60% of those age 65 or over.