Somerville URL: https://knowledge.ivjn.us/en/places/oh-somerville.html Somerville is a census-designated place in Butler County, Ohio. **Somerville** is a census-designated place (CDP) in Butler County, Ohio.[^census2020] Updated: 2026-11-01 Tags: - Administrative division https://knowledge.ivjn.us/en/tags/admin-division.html Relations: - Located in: Butler County https://knowledge.ivjn.us/en/places/oh-butler-county.html Sources: - GeoNames: Somerville (geonameId 4525006) https://www.geonames.org/4525006/somerville.html - 2020 Census Gazetteer Files: Places, Ohio https://www2.census.gov/geo/docs/maps-data/data/gazetteer/2020_Gazetteer/2020_gaz_place_39.txt Somerville CDP, GEOID 3972998