Angleton ISD is a public school district in Angleton, Texas (USA), operating 5 levels of education. Established in 1897, AISD encompasses 396 square miles (1,030 km2) in Brazoria County, serving Angleton as well as the Village of Bonney, the Sandy Point census-designated place, parts of the CDP of Rosharon, and the unincorporated areas of Chocolate Bayou, Lochridge, and Otey.