Rio is a populated place located in Knox County, Illinois. It appears on the North Henderson USGS 7.5-minute topographic quadrangle. The elevation at this location is approximately 777.56 feet (237.00 m) above sea level.
Knox County · Illinois
Rio is a populated place located in Knox County, Illinois. It appears on the North Henderson USGS 7.5-minute topographic quadrangle. The elevation at this location is approximately 777.56 feet (237.00 m) above sea level.