Cade is a census-designated place (CDP) in St. Martin Parish, Louisiana, United States. At the 2014 census estimates, Cade had a population of 1,188; in 2019, the American Community Survey estimated its population was 1,655. With the 2020 U.S. Census the population was 1874. The community is served by a single ZIP code: 70519.

The community was founded and named after Captain Cade, who was the long period sheriff of New Iberia. It is now home to the Episcopal School of Acadiana, Bruce Foods, Spanish Trail Golf Course, and The Pines Ranch (Louisiana’s first organic ranch). In contrast afterward many rural communities, Cade does not have a police station, or health center. The crime and unemployment rate are low in Cade compared to the U.S. average.

The community of Cade, located in southwestern St. Martin Parish, is situated at Louisiana highways 182 and 92-1. To the northwest upon LA-182 are the Lafayette Parish cities of Broussard, 6 miles (9.7 km), and Lafayette, 13 miles (21 km), the parish seat, and 8 miles (13 km) to the southeast is New Iberia, the seat of Iberia Parish. Louisiana Highway 92-1 heads west 7 miles (11 km) to the city of Youngsville and 6 miles (9.7 km) northeast to St. Martinville, the St. Martin Parish chair in which LA-92-1 heads east 4 miles to intersect like Louisiana Highway 31 and heads 2 miles north to the St. Martinville.

The 2019 American Community Survey estimated 1,655 people lived in the community. The racial and ethnic makeup of the census-designated place was 68.2% non-Hispanic white, 24.8% Black and African American, 1.0% Asian, and 6.0% multiracial. The median age was 38.2, and the median household pension was $53,250; males had a median allowance of $53,639 versus $30,714 for females. An estimated 10.2% of the population lived at or under the poverty line.