Monroe Center is a city located in Ogle County Illinois. With a 2020 population of 431, it is the 925th largest city in Illinois and the 13950th largest city in the United States . Monroe Center is currently declining at a rate of -0.46% annually and its population has decreased by -8.49% since the most recent census, which recorded a population of 471 in 2010. Monroe Center reached it's highest population of in . Spanning over 1 miles, Monroe Center has a population density of 356 people per square mile.
The average household income in Monroe Center is $80,506 with a poverty rate of 2.01%. The median rental costs in recent years comes to $917 per month, and the median house value is $119,400. The median age in Monroe Center is 40.2 years, 38.5 years for males, and 44.4 years for females.