The City of Delta is the Home Rule Municipality that is the county seat and the most populous municipality of Delta County, Colorado, United States. The population was 8,915 at the 2010 census, up from 6,400 at the 2000 census. The United States Forest Service headquarters of the Grand Mesa, Gunnison, and Uncompahgre National Forests are located in Delta.
Delta is located in southwestern Delta County at 38°44′27″N 108°3′48″W / 38.74083°N 108.06333°W / 38.74083; -108.06333 (38.740879, -108.063423). The downtown area is situated south of the Gunnison River and east of the Uncompaghre River. The city limits extend north across the Gunnison into the area now known as “North Delta”, then west 6 miles (10 km) along U.S. Route 50 as far as Westwinds Airport.
According to the United States Census Bureau, the city has a total area of 14.0 square miles (36.3 km), of which 13.7 square miles (35.6 km) is land and 0.3 square miles (0.7 km), or 2.02%, is water.
Delta is part of the Colorado Western Slope region.
As of the census of 2010, there were 8,915 people, 3,530 households, and 2,337 families residing in the city. The population density was 1,682.1 people per square mile (632.3/km²). There were 3,825 housing units at an average density of 721.7 per square mile (271.3/km²). The racial makeup of the city was 82.2% White, 0.2% African American, 1.1% Native American, 0.7% Asian, 12.5% from other races, and 3.1% from two or more races. Hispanic or Latino of any race were 26.1% of the population.
There were 3,530 households out of which 30.3% had children under the age of 18 living with them, 49.3% were married couples living together, 11.6% had a female householder with no husband present, and 33.8% were non-families. 30.0% of all households were made up of individuals and 14.8% had someone living alone who was 65 years of age or older. The average household size was 2.49, and the average family size was 3.08.
In the city, the population was spread out with 26.7% under the age of 18, 8.2% from 18 to 24, 23.2% from 25 to 44, 24.5% from 45 to 64, and 17.5% who were 65 years of age or older. The median age was 38.0 years. For every 100 females, there were 93.8 males. For every 100 females age 18 and over, there were 91.0 males.
Delta Colorado neighborhoods include: Frank Edward, Garnet Mesa, North Delta, Pea Green