Grand Ridge is a town in Jackson County, Florida, United States. It is part of the Florida Panhandle and North Florida. The population was 882 at the 2020 census. In 1860, Judge John Thomas Porter and his wife Phoebe J. Porter moved from New Salem, Fayette County, Pennsylvania to Illinois with their son Ebenezer F. Porter, close to Grand Ridge, Illinois in La…Grand Ridge is a town in Jackson County, Florida, United States. It is part of the Florida Panhandle and North Florida. The population was 882 at the 2020 census. In 1860, Judge John Thomas Porter and his wife Phoebe J. Porter moved from New Salem, Fayette County, Pennsylvania to Illinois with their son Ebenezer F. Porter, close to Grand Ridge, Illinois in LaSalle County, Illinois, where they lived on a farm until 1872. Porter was at first a farmer, and afterward a lumberman and grain dealer. In 1872, he moved into Grand Ridge, Illinois proper, and built and operated two grain elevators. In 1882, he moved to Florida and engaged in the lumber business. He founded the Town of Grand Ridge, Florida, naming it in honor of his old Illinois home.