
Clay
- County:
- Jefferson County
- County Seat:
- No
- Area (mi²):
- 11.275
- State:
- Alabama
Clay is a city located in Jefferson County, Alabama. Clay has a 2025 population of 10,156. Clay is currently declining at a rate of -0.31% annually and its population has decreased by -1.57% since the most recent census, which recorded a population of 10,318 in 2020.
The average household income in Clay is $90,907 with a poverty rate of 10.33%. The median age in Clay is 40.4 years: 41.5 years for males, and 39.5 years for females.