Alton is a city located in Missouri. With a 2020 population of 808, it is the 378th largest city in Missouri and the 11237th largest city in the United States. Alton is currently declining at a rate of -1.82% annually and its population has decreased by -7.23% since the most recent census, which recorded a population of 871 in 2010. Alton reached it's highest population of 884 in 2011. Spanning over 2 miles, Alton has a population density of 515 people per square mile.
The average household income in Alton is $28,302 with a poverty rate of 24.86%. The median rental costs in recent years comes to $473 per month, and the median house value is $67,900. The median age in Alton is 54 years, 49.1 years for males, and 60.5 years for females. For every 100 females there are 77.7 males.