
Monroe
- County:
- Monroe County
- County Seat:
- Yes
- Area (mi²):
- 9.046
- State:
- Michigan
Monroe is a city located in Monroe County, Michigan. Monroe has a 2025 population of 19,847. It is also the county seat of Monroe County. Monroe is currently declining at a rate of -0.61% annually and its population has decreased by -2.95% since the most recent census, which recorded a population of 20,451 in 2020.
The average household income in Monroe is $72,394 with a poverty rate of 18.3%. The median age in Monroe is 36.9 years: 35.2 years for males, and 39.5 years for females.