Clay is a cdp located in Jefferson County, in the state of Alabama (AL), United States. Nestled in the East South Central division of the South region, it covers an area of 10.3 square miles (27.0 km²) and sits at an elevation of 937 ft. With a population of approximately 4,947 residents, Clay offers a peaceful, rural atmosphere.
The town's population is composed of about 49.5% males and 50.5% females, and it has a population density of 480.29 people per square mile (185.44/km²). Clay lies at a latitude of 33.7 and a longitude of -86.62, operating in the UTC-6.
Locals reflect a blend of American ancestry, with roots primarily in United States (19.1%), followed by English (11.4%), German (10.2%), and Scotch-Irish (0%) heritage. The town is identified by the ZIP code N/A.