Redwood City
- County:
- San Mateo County
- County Seat:
- Yes
- Area (mi²):
- 19.336
- State:
- California
Redwood City is a city located in San Mateo County, California. Redwood City has a 2026 population of 82,982. It is also the county seat of San Mateo County. Redwood City is currently growing at a rate of 1.24% annually but its population has decreased by -1.06% since the most recent census, which recorded a population of 83,875 in 2020.