Jonesville is the largest town in Catahoula Parish, Louisiana, United States, at the confluence of the Ouachita, Tensas, and Little rivers.

A few plantation houses still stand, built during the former slavery-based, planter-dominated economy.

The population fell significantly when a textile mill shut down in the late 1980s.

According to the United States Census Bureau, Jonesville has a total area of 1.9 square miles (5.0 km2), all land.

[4] The climate in the area is characterized by hot, humid summers and generally mild-to-cool winters.

[8] As of the 2020 United States census, there were 1,728 people, 703 households, and 386 families residing in the town.

28.7% of all households were made up of individuals, and 11.6% had someone living alone who was 65 years of age or older.