Bayou L'Ourse is a census-designated place (CDP) in Assumption Parish, Louisiana, United States.

The population was 1,978 at the 2010 census.

[3] Bayou L'Ourse is located at 29°43′18″N 91°3′28″W / 29.72167°N 91.05778°W / 29.72167; -91.05778,[4] located between the Intracoastal Waterway in lower Assumption Parish North along Hwy 662 to Bayou Cheramie on Hwy 398.

It is 12 miles (19 km) east of Morgan City 18 miles (29 km) west of Thibodaux and 10 miles (16 km) South of Labadieville.

According to the United States Census Bureau, the CDP has a total area of 2.7 square miles (7.1 km2),[3]