| Business | Phone |
| St Marys City Sewage Treatment 301 W Weed St, St Marys 31558 | (912) 882-3385 |
| St Marys Planning & Building 418 Osborne St, St Marys 31558 | (912) 882-6926 |
| St Marys Senior Citizens 410 Osborne St, St Marys 31558 | (912) 673-6075 |
| City Of St Marys 400 Osborne St, St Marys 31558 | (912) 673-1807 |