Aberdeen
- County:
- Monroe County
- County Seat:
- Yes
- Area (mi²):
- 12.09
- State:
- Mississippi
Aberdeen is a city located in Monroe County, Mississippi. Aberdeen has a 2026 population of 4,833. It is also the county seat of Monroe County. Aberdeen is currently declining at a rate of -0.74% annually and its population has decreased by -2.56% since the most recent census, which recorded a population of 4,960 in 2020.