City Of Montrose--community Development 101 W Main St Humboldt, SD 57035 Phone : (605) 363-3020 Business Category Government Offices-City Village & Twp Government Offices State & Local Administration Of Urban Planning & Community/Rural Dev Government Offices & Public Schools Montrose City Of--community Development 101 W Main St Montrose, SD 57048 Phone : (605) 363-3020 Business Category Government Offices-City Village & Twp Government Offices State & Local Administration Of Urban Planning & Community/Rural Dev Government Offices & Public Schools