Piedmont
- County:
- Alameda County
- County Seat:
- No
- Area (mi²):
- 1.7
- State:
- California
Piedmont is a city located in Alameda County, California. Piedmont has a 2026 population of 10,816. Piedmont is currently growing at a rate of 0.36% annually but its population has decreased by -3.93% since the most recent census, which recorded a population of 11,258 in 2020.