Clendenin is a town in Kanawha County, West Virginia along the Elk River. The population was 1,227 at the 2010 census.
According to the United States Census Bureau, the town has a total area of 1.51 square miles (3.91 km), of which, 1.44 square miles (3.73 km) is land and 0.07 square miles (0.18 km) is water.
The median income for a household in the town was $32,000, and the median income for a family was $38,021. Males had a median income of $30,000 versus $18,500 for females. The per capita income for the town was $16,587. About 9.7% of families and 14.6% of the population were below the poverty line, including 13.7% of those under age 18 and 20.2% of those age 65 or over.
As of the census of 2010, there were 1,227 people, 524 households, and 335 families residing in the town. The population density was 852.1 inhabitants per square mile (329.0/km). There were 576 housing units at an average density of 400.0 per square mile (154.4/km). The racial makeup of the town was 98.7% White, 0.2% African American, 0.3% Asian, and 0.7% from two or more races. Hispanic or Latino of any race were 0.1% of the population.
There were 524 households of which 27.1% had children under the age of 18 living with them, 49.0% were married couples living together, 10.7% had a female householder with no husband present, 4.2% had a male householder with no wife present, and 36.1% were non-families. 31.7% of all households were made up of individuals and 15.3% had someone living alone who was 65 years of age or older. The average household size was 2.34 and the average family size was 2.96.
The median age in the town was 43.5 years. 21.7% of residents were under the age of 18; 6.8% were between the ages of 18 and 24; 23.8% were from 25 to 44; 29% were from 45 to 64; and 18.7% were 65 years of age or older. The gender makeup of the town was 49.8% male and 50.2% female.