bˈɪsd sˈɜːvz mˈoʊst əv ðə sˈɪɾi ʌv bɹˈaʊnzvɪl ænd ɐ pˈoːɹʃən ʌvðə tˈaʊn ʌv ɹˈæntʃoʊ viːˈeɪoʊ æz wˈɛl æz ˌʌnɪŋkˈoːɹpɚɹˌeɪɾᵻd ˈɛɹiəz ɪn kˈæmɚɹən kˈaʊnti, ɪŋklˈuːdɪŋ kˈæmɚɹən pˈɑːɹk, ɹˈiːd hˈoʊp kˈɪŋ, sˌæn pˈɛdɹoʊ, sˈaʊθ pˈɔɪnt, ænd vˈɪlə pˈæntʃoʊ.
BISD serves most of the city of Brownsville and a portion of the town of Rancho Viejo as well as unincorporated areas in Cameron County, including Cameron Park, Reid Hope King, San Pedro, South Point, and Villa Pancho.