Altenburg City Hall Altenburg, MO 63732 Phone : (573) 824-5761 Business Category Government Offices-City Village & Twp Government Offices State & Local Government Offices & Public Schools Altenburg City Of--city Hall Frohna, MO 63748 Phone : (573) 824-5761 Business Category Government Offices-City Village & Twp Government Offices State & Local Government Offices & Public Schools