Eagle is a statutory town that is the county seat of Eagle County, Colorado, United States. The population was 6,508 at the 2010 census, up from 3,032 at the 2000 census.
Eagle is located west of the center of Eagle County in the valley of the Eagle River, a west-flowing tributary of the Colorado River. The town limits extend southward up the valley of Brush Creek. U.S. Route 6 passes through the center of town, and Interstate 70 passes through the northern side, with access from Exit 147. Vail is 30 miles (48 km) to the east, and Glenwood Springs is 31 miles (50 km) to the west.
According to the U.S. Census Bureau, the town has a total area of 4.6 square miles (11.9 km), of which 0.02 square miles (0.05 km), or 0.44%, is water.
As of the 2010 census, there were 6,508 people, 2,183 households, and 1,666 families residing in the town. The population density was 1,417.9 people per square mile (547.5/km²). There were 2,416 housing units at an average density of 526.4 per square mile (203.2/km²). The racial makeup of the town was 87.3% white, 0.4% African American, 0.8% Native American, 0.8% Asian, 0.02% Pacific Islander, 7.9% some other race, and 2.6% from two or more races. Hispanic or Latino of any race were 22.3% of the population.
There were 2,183 households, out of which 49.5% had children under the age of 18 living with them, 65.5% were headed by married couples living together, 6.7% had a female householder with no husband present, and 23.7% were non-families. 16.3% of all households were made up of individuals, and 4.1% were someone living alone who was 65 years of age or older. The average household size was 2.96 and the average family size was 3.33.
In the town, the population was spread out with 31.7% under the age of 18, 5.8% from 18 to 24, 35.8% from 25 to 44, 22.7% from 45 to 64, and 4.1% who were 65 years of age or older. The median age was 33.8 years. For every 100 females, there were 104.5 males. For every 100 females age 18 and over, there were 102.9 males.
For the period 2010–14, the estimated median annual income for a household in the town was $81,571, and the median income for a family was $94,875. Male full-time workers had a median income of $65,156 versus $47,902 for females. The per capita income for the town was $35,426. About 2.0% of families and 4.2% of the population were below the poverty line, including 2.8% of those under age 18 and 28.2% of those age 65 or over.