West Conshohocken is a borough in Montgomery County, Pennsylvania, United States. The population was 1,320 at the 2010 census. Its sister community is Conshohocken, located across the Schuylkill River. Montgomery County's seat, Norristown, is located approximately two miles north of, and on the opposite side of the river from, West Conshohoc…West Conshohocken is a borough in Montgomery County, Pennsylvania, United States. The population was 1,320 at the 2010 census. Its sister community is Conshohocken, located across the Schuylkill River. Montgomery County's seat, Norristown, is located approximately two miles north of, and on the opposite side of the river from, West Conshohocken.