Oakville is a census-designated place and neighborhood section of Watertown, Connecticut. in Litchfield County, Connecticut, United States. The population was 8,618 at the 2000 census. The zip code for Oakville, Connecticut is 06779.
According to the United States Census Bureau, the CDP has a total area of 8.3 km² (3.2 mi²). 8.2 km² (3.2 mi²) of it is land and 0.1 km² (0.04 mi²) of it (0.94%) is water.
Oakville is north of Interstate 84 and east of US Route 6.