Monroe is a city located in Michigan. With a 2020 population of 19,439, it is the 56th largest city in Michigan and the 1897th largest city in the United States. Monroe is currently declining at a rate of -0.70% annually and its population has decreased by -6.24% since the most recent census, which recorded a population of 20,733 in 2010. Monroe reached it's highest population of 23,894 in 1970. Spanning over 10 miles, Monroe has a population density of 2,148 people per square mile.
The average household income in Monroe is $59,714 with a poverty rate of 18.65%. The median rental costs in recent years comes to $731 per month, and the median house value is $115,700. The median age in Monroe is 36.9 years, 37.3 years for males, and 36.7 years for females. For every 100 females there are 83.5 males.