Aratiba is the 117° Municipal district created in the Brazilian state of Rio Grande do Sul. Aratiba's Municipal district is located in the north of Ri…Aratiba is the 117° Municipal district created in the Brazilian state of Rio Grande do Sul. Aratiba's Municipal district is located in the north of Rio Grande do Sul's State, emblem with Santa Catarina to 420 km capital Porto Alegre, and to 35 km city of Erechim. As of 2020, the estimated population was 6,189.