Lancaster URL: https://knowledge.ivjn.us/en/places/oh-lancaster.html Lancaster is a city in Fairfield County, Ohio, United States. **Lancaster** is a city in [Fairfield County](https://knowledge.ivjn.us/en/places/oh-fairfield-county.html), [Ohio](https://knowledge.ivjn.us/en/places/ohio.html), United States. Updated: 2026-11-01 Relations: - Located in: Fairfield County https://knowledge.ivjn.us/en/places/oh-fairfield-county.html Sources: - GeoNames US dataset (US.txt / admin2Codes.txt) https://download.geonames.org/export/dump/US.zip