Neptune is a populated place located in Mercer County, Ohio. It appears on the Saint Marys USGS 7.5-minute topographic quadrangle. The elevation at this location is approximately 850.24 feet (259.15 m) above sea level.
Mercer County · Ohio
Neptune is a populated place located in Mercer County, Ohio. It appears on the Saint Marys USGS 7.5-minute topographic quadrangle. The elevation at this location is approximately 850.24 feet (259.15 m) above sea level.