Bent County is one of the 64 counties of the U.S. state of Colorado. As of the 2010 census, the population was 6,499. The county seat and only incorporated municipality is Las Animas. The county is named in honor of frontier trader William Bent.
According to the U.S. Census Bureau, the county has a total area of 1,541 square miles (3,990 km), of which 1,513 square miles (3,920 km) is land and 28 square miles (73 km) (1.8%) is water.
As of the census of 2000, there were 5,998 people, 2,003 households, and 1,388 families residing in the county. The population density was 4 people per square mile (2/km²). There were 2,366 housing units at an average density of 2 per square mile (1/km²). The racial makeup of the county was 79.53% White, 3.65% Black or African American, 2.23% Native American, 0.57% Asian, 10.25% from other races, and 3.77% from two or more races. 30.24% of the population were Hispanic or Latino of any race.
There were 2,003 households out of which 32.50% had children under the age of 18 living with them, 53.50% were married couples living together, 11.40% had a female householder with no husband present, and 30.70% were non-families. 27.20% of all households were made up of individuals and 12.20% had someone living alone who was 65 years of age or older. The average household size was 2.53 and the average family size was 3.07.
In the county, the population was spread out with 23.80% under the age of 18, 9.30% from 18 to 24, 29.20% from 25 to 44, 21.80% from 45 to 64, and 15.90% who were 65 years of age or older. The median age was 37 years. For every 100 females there were 129.00 males. For every 100 females age 18 and over, there were 138.70 males.
The median income for a household in the county was $28,125, and the median income for a family was $34,096. Males had a median income of $22,755 versus $24,261 for females. The per capita income for the county was $13,567. About 16.60% of families and 19.50% of the population were below the poverty line, including 27.40% of those under age 18 and 13.00% of those age 65 or over.