Los Alamitos
- County:
- Orange County
- County Seat:
- No
- Area (mi²):
- 4.008
- State:
- California
Los Alamitos is a city located in Orange County, California. Los Alamitos has a 2026 population of 11,846. Los Alamitos is currently growing at a rate of 0.04% annually and its population has increased by 0.59% since the most recent census, which recorded a population of 11,777 in 2020.