The 2014 Charleston, West Virginia, population is 51,224. There are 1,625 people per square mile (population density). The median age is 42.3. The US median is 37.2. 45.20% of people in Charleston, West Virginia, are married. 14.89% are divorced. The average household size is 2.11 people. 25.24% of people are married, with children. 19.06% have children, but are single. 82.90% of people are white, 8.07% are black, 2.23% are asian, 0.09% are native american, and 0.16% claim 'Other'.