Storbritannia
- Lancaster, byen Lancashire
- City of Lancaster, distrikt Lancashire
Amerikas forente stater
- Lancaster, by i Los Angeles County, California
- Lancasterfylkesset for Lancaster County, Sør-Carolina
- Lancaster, by i Atchison County, Kansas
- Lancaster, fylkesete for Garrard County, Kentucky
- Lancaster, Worcester County kommune, Massachusetts
- Lancaster, en by i Kittson County, Minnesota
- Lancasterfylkesset for Schuyler County, Missouri
- Lancaster, eldgamle navnet på byen Lincoln, Nebraska
- Lancaster, hovedstadskommune i Coos County, New Hampshire
- Lancaster, by i Erie County, New York
- Lancasterfylkesset for Fairfield County, Ohio
- Lancaster, Butler County township, Pennsylvania
- Lancaster, fylkesset for Lancaster County, Pennsylvania
- Lancaster, et township i Lancaster County, Pennsylvania
- Lancaster, by i Dallas County, Texas
- Lancasterfylkesset for Lancaster County, Virginia
- Lancaster, fylkesete for Grant County, Wisconsin