University of Southern Mississippi Vast longleaf pine forests dominate the landscape of Hattiesburg, which sits in the heart of South Mississippi’s Pine Belt region. In the late 1800s, as rail and logging industries began developing the area’s resources, the city emerged as an economic hub. Named for Harriet “Hattie” Hardy, the founder’s wife, it went on to become home to the University of Southern Mississippi and eventually a bustling city of 50,000 people.