Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Green Springs is a village in Sandusky and Seneca counties in the U.S. state of Ohio. The population was 1,247 at the 2000 census. Its "claim to fame" is Mineral Springs, the largest natural sulfur spring in the world. St. Francis Health Care Centre is located there. According to the United States Census Bureau, the village has a total area of 1.1 square miles (2.8 km2), all land.