Research for available sources https://www.back4app.com/database/back4app/brazil-zip-code-database/get-started?objectClassSlug=brazil-postal-codes https://codigo-postal.org/en-us/brazil/ac/bujari/ https://postal-codes.cybo.com/brazil/muliterno/ Someone gdrive with postal codes, and it is clean, but high level 5 digit, might be useful in the future https://drive.google.com/drive/folders/1mN47iWtoVVqBUNuUiFeq7UQ65yAv-fps