Mentone is a census-designated place in San Bernardino County, California, United States. The population was 7,803 at the 2000 census and 8,720 at the 2010 census. It is located at 34°3′53″N 117°7′13″W. According to the United States Census Bureau, it has a total area of 6.2 square miles; 6.2 square miles of it is land and 0.19% is water. There is a good selection of housing developments, as well as bars, churches, and restaurants.