São Luiz Gonzaga is a municipality of the state of Rio Grande do Sul, Brazil. The population is 35,193 in an area of 1295,68 km². It was founded in the 17th century as a Jesuit mission town. It is located 503 km west of the state capital of Porto Alegre, northeast of Alegrete.Bounding municipalitiesRoque GonzalesRoladorCaibatéSão Miguel das MissõesBossorocaSanto Antônio das MissõesSão Nicolau, Rio Grande do SulDezesseis de Novembro