Alleman is a city located in Polk County Iowa. With a 2020 population of 446, it is the 476th largest city in Iowa and the 13798th largest city in the United States . Alleman is currently declining at a rate of -0.67% annually but its population has increased by 3.24% since the most recent census, which recorded a population of 432 in 2010. Alleman reached it's highest population of in . Spanning over 3 miles, Alleman has a population density of 165 people per square mile.
The average household income in Alleman is $114,971 with a poverty rate of 1.03%. The median rental costs in recent years comes to - per month, and the median house value is $193,000. The median age in Alleman is 51.5 years, 49.5 years for males, and 54.8 years for females.