 Geneva is located at (28.737149, -81.117726).According to the United States Census Bureau, the CDP has a total area of 32.2 km² (12.4 mi²), of which 29.5 km² (11.4 mi²) is land and 2.7 km² (1.0 mi²) (8.37%) is water.Geneva is on Route 46, located between Lake Harney and Lake Jesup.