Maple Heights-Lake Desire is located at (47.445557, -122.090771)
According to the United States Census Bureau, the CDP has a total area of 4.3 square miles (11.1 km²), of which, 4.1 square miles (10.6 km²) of it is land and 0.2 square miles (0.6 km²) of it (5.12%) is water.