Hayward
- County:
- Alameda County
- County Seat:
- No
- Area (mi²):
- 45.818
- State:
- California
Hayward is a city located in Alameda County, California. Hayward has a 2026 population of 158,440. Hayward is currently growing at a rate of 0.68% annually but its population has decreased by -2.63% since the most recent census, which recorded a population of 162,726 in 2020.