Jonesville is the largest town in Catahoula Parish, Louisiana, United States, at the confluence of the Ouachita, Tensas, and Little rivers. The three rivers become the Black River at Jonesville.
The Jonesville population was 2,265 at the 2010 census.
The four rivers which intersect near Jonesville are all subject to flooding. There are surrounding soybean and cotton fields. The population fell significantly when a textile mill shut down in the late 1980s.
U.S. Route 84, passes through the town as 4th Street and leads east 16 miles to Ferriday, west 23 miles to Jena. Louisiana State Highway 124 leads north 10 miles to Harrisonburg, the Catahoula Parish seat, and south 24 miles to its end in Argo.
