Centenary United Methodist ChurchFirst Baptist ChurchFriends of the ChamberGarden Club of Pentwater and Neighboring CommunitiesMarine Corps League – Oceana/Brett Witteven #1225Oceana County Historical and Genealogical SocietyPentwater Historical SocietyPentwater Jr. Women’s ClubPentwater Lake AssociationPentwater Public SchoolsPentwater Service ClubPentwater Sportfishing AssociationPentwater Tennis ClubPentwater Women’s ClubSt. James Episcopal ChurchSt. Vincent’s Catholic ChurchVeterans of Foreign Wars – Eldon L. Chadwick Post 6017West Michigan S.A.I.L. Program
