Alum Creek is a census-designated place (CDP) in Kanawha and Lincoln counties along the Coal River in the U.S. state of West Virginia. It had a population of 1,749 at the 2010 census.
The community was named after nearby Alum Creek.
Alum Creek is at 38°16′45″N 81°49′32″W (38.279034, -81.825657).
According to the United States Census Bureau, the CDP has a total area of 10.3 square miles (27 km2); 10.2 square miles (26 km2) of this is land, and 0.1 square miles (0.26 km2) is water.
As of the census of 2000, there were 1,839 people, 759 households, and 563 families residing in the CDP. The population density was 107.0 inhabitants per square mile (41.3/km2). There were 837 housing units at an average density of 48.7 per square mile (18.8/km2). The racial makeup of the CDP was 99.18% White, 0.33% African American, and 0.49% from two or more races. Hispanic or Latino of any race were 0.16% of the population.
There were 759 households, out of which 29.4% had children under the age of 18 living with them, 62.3% were married couples living together, 8.2% had a female householder with no husband present, and 25.8% were non-families. 23.3% of all households were made up of individuals, and 11.2% had someone living alone who was 65 years of age or older. The average household size was 2.42 and the average family size was 2.85.
In the CDP, the population was spread out, with 20.8% under the age of 18, 9.4% from 18 to 24, 28.9% from 25 to 44, 27.4% from 45 to 64, and 13.5% who were 65 years of age or older.