Keystone is a populated place located in Island County, Washington. It appears on the Coupeville USGS 7.5-minute topographic quadrangle. The elevation at this location is approximately 3.28 feet (1.00 m) above sea level.
Island County · Washington
Keystone is a populated place located in Island County, Washington. It appears on the Coupeville USGS 7.5-minute topographic quadrangle. The elevation at this location is approximately 3.28 feet (1.00 m) above sea level.