
Clay
- County:
- Lancaster County
- County Seat:
- No
- Area (mi²):
- 2.236
- State:
- Pennsylvania
Clay is a CDP located in Lancaster County, Pennsylvania. Clay has a 2025 population of 1,349. Clay is currently declining at a rate of -1.03% annually and its population has decreased by -18.98% since the most recent census, which recorded a population of 1,665 in 2020.
The average household income in Clay is $96,843 with a poverty rate of 7.36%. The median age in Clay is 54.1 years: 55.7 years for males, and 48.5 years for females.