Plymouth Meeting is a census-designated place (CDP) that straddles Plymouth and Whitemarsh Townships in Montgomery County, Pennsylvania, United States. The settlement was founded in 1686.

Plymouth Township is a township with home rule status in Montgomery County, Pennsylvania. The township has been governed by a home rule charter since 1976 and is no longer subject to the Pennsylvania Township Code. The population was 16,525 at the 2010 census. It is serviced by the Colonial School District and is home to the Plymouth Meeting Mall.