Glen Allen is a city located in Fayette County Alabama. With a 2020 population of 470, it is the 343rd largest city in Alabama and the 13581st largest city in the United States . Glen Allen is currently declining at a rate of -1.05% annually and its population has decreased by -7.84% since the most recent census, which recorded a population of 510 in 2010. Glen Allen reached it's highest population of 506 in 2010. Spanning over 7 miles, Glen Allen has a population density of 72 people per square mile.
The average household income in Glen Allen is $56,572 with a poverty rate of 20.98%. The median rental costs in recent years comes to $837 per month, and the median house value is $100,000. The median age in Glen Allen is 49.1 years, 47.8 years for males, and 49.5 years for females.