Usa-Places.com has listed approx 11 Non-profit organizations in San Marcos. Some of the Top rated Non-profit organizations in San Marcos are- The Meadows Center for Water and the Environment, The Meadows Center for Water and the Environment, Southside Community Center, Boys & Girls Clubs of South Central Texas, Gamma Phi Beta, Texas Preparatori Boys & Girls, H.E.A.T. Establishment - Texas State, Freedom Legacy International, Aware Foundation Group & Turkeys Tackling Hunger.