Newark
- County:
- Alameda County
- County Seat:
- No
- Area (mi²):
- 13.919
- State:
- California
Newark is a city located in Alameda County, California. Newark has a 2026 population of 46,254. Newark is currently declining at a rate of -1.14% annually and its population has decreased by -2.66% since the most recent census, which recorded a population of 47,516 in 2020.