Big Delta is a census-designated place (CDP) in Southeast Fairbanks Census Area, Alaska, United States. The population was 591 at the 2010 census, down from 749 in 2000. Big Delta is at the confluence of the Delta River and the Tanana River and gets its name from the huge river delta formed by the confluence.
Big Delta is located at 64°8′50″N 145°48′6″W / 64.14722°N 145.80167°W / 64.14722; -145.80167 (64.147324, -145.801545).
According to the United States Census Bureau, the CDP has a total area of 61.1 square miles (158 km), of which, 55.2 square miles (143 km) of it is land and 5.9 square miles (15 km) of it (9.70%) is water.
Big Delta first appeared on the 1950 U.S. Census as an unincorporated village. It did not appear again until 1980 when it was made a census-designated place (CDP).
As of the census of 2000, there were 749 people, 165 households, and 117 families residing in the CDP. The population density was 13.6 people per square mile (5.2/km²). There were 232 housing units at an average density of 4.2/sq mi (1.6/km²). The racial makeup of the CDP was 95.46% White, 0.13% Black or African American, 1.47% Native American, 0.53% Asian, and 2.40% from two or more races. 2.54% of the population were Hispanic or Latino of any race.
There were 165 households out of which 39.4% had children under the age of 18 living with them, 61.2% were married couples living together, 6.7% had a female householder with no husband present, and 28.5% were non-families. 21.8% of all households were made up of individuals and 7.3% had someone living alone who was 65 years of age or older. The average household size was 3.18 and the average family size was 3.90.
In the CDP, the population was spread out with 36.3% under the age of 18, 10.1% from 18 to 24, 23.5% from 25 to 44, 24.0% from 45 to 64, and 6.0% who were 65 years of age or older. The median age was 29 years. For every 100 females, there were 92.5 males. For every 100 females age 18 and over, there were 96.3 males.
The median income for a household in the CDP was $49,000, and the median income for a family was $53,125. Males had a median income of $32,250 versus $37,708 for females. The per capita income for the CDP was $14,803. About 7.9% of families and 30.0% of the population were below the poverty line, including 18.9% of those under age 18 and 16.0% of those age 65 or over.