Lancaster
- County:
- Los Angeles County
- County Seat:
- No
- Area (mi²):
- 94.282
- State:
- California
Lancaster is a city located in Los Angeles County, California. Lancaster has a 2026 population of 167,426. Lancaster is currently growing at a rate of 0.08% annually but its population has decreased by -3.33% since the most recent census, which recorded a population of 173,192 in 2020.