Lancaster
- County:
- Lancaster County
- County Seat:
- Yes
- Area (mi²):
- 7.227
- State:
- Pennsylvania
Lancaster is a city located in Lancaster County, Pennsylvania. Lancaster has a 2026 population of 58,441. It is also the county seat of Lancaster County. Lancaster is currently growing at a rate of 1.98% annually and its population has increased by 0.86% since the most recent census, which recorded a population of 57,943 in 2020.