Leesville is an unincorporated community in Gonzales County, Texas, United States. According to the Handbook of Texas, the community had an estimated population 150 in 2000.Leesville is located at 29°24′25″N 97°44′42″W / 29.40694°N 97.74500°W / 29.40694; -97.74500. It is situated along State Highway 80 in southwestern Gonzales County, approximately 26 miles west of Gonzales and 19 miles south of Luling.Although it is unincorporated, Leesville has a post office with the zip code of 78122.Public education in the community of Leesville is provided by the Nixon-Smiley Consolidated Independent School District.