Texas Subcategories This category has the following 5 subcategories, out of 5 total. L Libraries in Plymouth County, Massachusetts (29 P)M Museums in Plymouth County, Massachusetts (1 C, 15 P)S School districts in Plymouth County, Massachusetts (1 C, 6 P) Schools in Plymouth County, Massachusetts (2 C, 28 P)U Universities and colleges in Plymouth County, Massachusetts (1 C, 2 P)