Allegan is a city located in Michigan. With a 2020 population of 5,068, it is the 149th largest city in Michigan and the 4713th largest city in the United States. Allegan is currently growing at a rate of 0.34% annually and its population has increased by 1.40% since the most recent census, which recorded a population of 4,998 in 2010. Spanning over 4 miles, Allegan has a population density of 1,318 people per square mile.
The average household income in Allegan is $55,361 with a poverty rate of 11.46%. The median rental costs in recent years comes to $838 per month, and the median house value is $104,200. The median age in Allegan is 32.1 years, 31.9 years for males, and 32.2 years for females. For every 100 females there are 108.0 males.