Bayou Vista is a census-designated place (CDP) in St. Mary Parish, Louisiana, United States.

[2] It is part of the Morgan City Micropolitan Statistical Area.

Bayou Vista is located at 29°41′26″N 91°16′9″W / 29.69056°N 91.26917°W / 29.69056; -91.26917 (29.690521, -91.269048).

[3] According to the United States Census Bureau, the CDP has a total area of 1.9 square miles (5.0 km2), of which 1.8 square miles (4.7 km2) is land and 0.15 square miles (0.4 km2), or 7.52%, is water.

[2] As of the 2020 United States census, there were 4,213 people, 1,859 households, and 1,030 families residing in the CDP.