Green Springs is a village in Sandusky and Seneca counties in the U.S. state of Ohio. The population was 1,368 at the 2010 census. Its "claim to fame" is Mineral Springs, the largest natural sulfur sprin…Green Springs is a village in Sandusky and Seneca counties in the U.S. state of Ohio. The population was 1,368 at the 2010 census. Its "claim to fame" is Mineral Springs, the largest natural sulfur spring in the world. Elmwood at the Springs Healthcare Center, formerly St. Francis Health Care Centre, is located there.