Dulac is a census-designated place (CDP) in Terrebonne Parish, Louisiana, United States. The population was 2,458 at the 2000 census. It is part of the Houma–Bayou Cane–Thibodaux Metropolitan Statistical Area.
Dulac is located at 29°23′5″N 90°41′49″W (29.384672, -90.696891). According to the United States Census Bureau, the CDP has a total area of 26.4 square miles (68 km2), of which 21.4 square miles (55 km2) is land and 5.0 square miles (13 km2) (18.83%) is water.
As of the census of 2000, there were 2,458 people, 768 households, and 609 families residing in the CDP. The population density was 114.8 people per square mile (44.3/km2). There were 1,063 housing units at an average density of 49.6 per square mile (19.2/km2). The racial makeup of the CDP was 53.99% White, 2.48% African American, 39.42% Native American, 0.49% Asian, 0.49% from other races, and 3.13% from two or more races. Hispanic or Latino of any race were 1.71% of the population.
There were 768 households, out of which 36.6% had children under the age of 18 living with them, 57.9% were married couples living together, 14.2% had a female householder with no husband present, and 20.7% were non-families.