Allen is a city located in Kansas. With a 2020 population of 172, it is the 435th largest city in Kansas and the 17116th largest city in the United States. Allen is currently declining at a rate of -0.58% annually and its population has decreased by -2.82% since the most recent census, which recorded a population of 177 in 2010. Allen reached it's highest population of 177 in 2010. Spanning over 0 miles, Allen has a population density of 622 people per square mile.
The average household income in Allen is $42,885 with a poverty rate of 18.07%. The median rental costs in recent years comes to $588 per month, and the median house value is $57,500. The median age in Allen is 34.7 years, 29.6 years for males, and 39.6 years for females. For every 100 females there are 74.7 males.