
Clayton
- County:
- Adams County
- County Seat:
- No
- Area (mi²):
- 0.884
- State:
- Illinois
Clayton is a village located in Adams County, Illinois. Clayton has a 2025 population of 609. Clayton is currently declining at a rate of -0.98% annually and its population has decreased by -4.55% since the most recent census, which recorded a population of 638 in 2020.
The average household income in Clayton is $67,586 with a poverty rate of 11.52%. The median age in Clayton is 49.8 years: 49.1 years for males, and 52.9 years for females.