
Clayton
- County:
- Montgomery County
- County Seat:
- No
- Area (mi²):
- 18.512
- State:
- Ohio
Clayton is a city located in Montgomery County, Ohio. Clayton has a 2025 population of 13,167. Clayton is currently declining at a rate of -0.2% annually and its population has decreased by -1.03% since the most recent census, which recorded a population of 13,304 in 2020.
The average household income in Clayton is $110,066 with a poverty rate of 6.04%. The median age in Clayton is 45.1 years: 43.8 years for males, and 45.5 years for females.