Eagle County is one of the 64 counties of the U.S. state of Colorado. As of the 2010 census, the population was 52,197. The county seat is the Town of Eagle. The county is named for the Eagle River.
The highest elevation in the county is the Mount of the Holy Cross which rises to 14,011 feet (4,271 m) above sea level. The lowest elevation is on the Colorado River at 6,128 feet (1,868 m).
According to the U.S. Census Bureau, the county has a total area of 1,692 square miles (4,380 km), of which 1,685 square miles (4,360 km) is land and 7.3 square miles (19 km) (0.4%) is water.
Much of the county is taken up by White River National Forest, and much of the rest is managed by the Bureau of Land Management. Interstate 70 crosses the county from east to west.
The Eagle River rises in the southeastern part of the county. It receives Gore Creek at Dowds Junction, and joins the Colorado River in the west. Fryingpan River and the Roaring Fork River intersect the southwest corner of the county.
As of the census of 2000, there were 41,659 people, 15,148 households, and 9,013 families residing in the county. The population density was 25 people per square mile (10/km²). There were 22,111 housing units at an average density of 13 per square mile (5/km²). The racial makeup of the county was 85.35% White, 0.34% Black or African American, 0.71% Native American, 0.82% Asian, 0.07% Pacific Islander, 10.80% from other races, and 1.90% from two or more races. 23.24% of the population were Hispanic or Latino of any race.
There were 15,148 households out of which 32.70% had children under the age of 18 living with them, 50.00% were married couples living together, 5.60% had a female householder with no husband present, and 40.50% were non-families. 20.90% of all households were made up of individuals and 1.90% had someone living alone who was 65 years of age or older. The average household size was 2.73 and the average family size was 3.17.
In the county, the population was spread out with 23.50% under the age of 18, 11.40% from 18 to 24, 42.10% from 25 to 44, 20.00% from 45 to 64, and 3.00% who were 65 years of age or older. The median age was 31 years. For every 100 females there were 121.00 males. For every 100 females age 18 and over, there were 125.80 males.
The median income for a household in the county was $62,682, and the median income for a family was $68,226. Males had a median income of $37,603 versus $30,579 for females. The per capita income for the county was $32,011. About 3.90% of families and 7.80% of the population were below the poverty line, including 6.80% of those under age 18 and 7.60% of those age 65 or over.
Eagle County Colorado neighborhoods include: Eagle North, Eagle Ranch, The Terrace