Southside is located at: 317 W. 23rd Street Tucson, AZ 85713 Phone Number: 520-623-6857 Email: southsideoffice@gmail.com Office Hours; Sunday & Monday 9AM-1PM Thursday & Friday 10AM-4PM Mailing Address: P.O. Box 27640 Tucson, AZ 85726-7640r Directions: From I-10, take 22nd street to South 10th Ave and turn right. Southside is located at the corner of 23rd Street and 10th Avenue.