Elbert County is one of the 64 counties of the U.S. state of Colorado. As of the 2010 census, the population was 23,086. The county seat is Kiowa.
According to the U.S. Census Bureau, the county has a total area of 1,851 square miles (4,790 km), of which 1,851 square miles (4,790 km) is land and 0.2 square miles (0.52 km) (0.01%) is water.
As of the census of 2000, there were 19,872 people, 6,770 households, and 5,652 families residing in the county. The population density was 11 people per square mile (4/km²). There were 7,113 housing units at an average density of 4 per square mile (1/km²). The racial makeup of the county was 95.22% White, 0.64% Black or African American, 0.63% Native American, 0.37% Asian, 0.09% Pacific Islander, 1.28% from other races, and 1.76% from two or more races. 3.85% of the population were Hispanic or Latino of any race.
There were 6,770 households out of which 42.80% had children under the age of 18 living with them, 75.10% were married couples living together, 5.70% had a female householder with no husband present, and 16.50% were non-families. 12.20% of all households were made up of individuals and 3.10% had someone living alone who was 65 years of age or older. The average household size was 2.93 and the average family size was 3.19.
In the county, the population was spread out with 30.20% under the age of 18, 5.50% from 18 to 24, 32.80% from 25 to 44, 25.50% from 45 to 64, and 6.00% who were 65 years of age or older. The median age was 37 years. For every 100 females there were 100.60 males. For every 100 females age 18 and over, there were 99.90 males.
The median income for a household in the county was $62,480, and the median income for a family was $66,740. Males had a median income of $45,329 versus $29,767 for females. The per capita income for the county was $24,960. About 2.50% of families and 4.00% of the population were below the poverty line, including 4.60% of those under age 18 and 4.50% of those age 65 or over.