Area Development Partnership (ADP) Post Office Box 751, Hattiesburg, MS 39401, One Convention Center Plaza, 601-296-7500, 800-238-HATT (4288),  more...

Hattiesburg Convention & Visitors Bureau 1 Convention Center Plaza, Hattiesburg, MS 39401, 601-268-3220, 800-638-6877 more... 

Historic Hattiesburg Downtown Association 723 Main St., Hattiesburg, MS 39403-0150, 601-583-4329, "Think Hub" more... 

AIDS Services Coalition P.O. Box 169, Hattiesburg, MS, 601-450-4286, The ASC provides assistance to persons living with HIV in Hattiesburg and surrounding communities, including transitional housing, case management, and outreach/education/prevention. more...

Diabetes Foundation of Mississippi 201 Methodist Boulevard Suite 302, Hattiesburg, MS 39402, 601-579-7790, 877-336-2873, This nonprofit health organization provides diabetes research, information, patient services and advocacy. The mission of the Foundation is to provide hope through research, programs and service.  more...