The University of Alabama at Birmingham (UAB) In the past four decades, UAB has evolved into a world-renowned research university and health care center, Alabama’s single largest employer, and the economic engine of Birmingham with an impact of more than $3 billion on the area. With more than 18,000 students, 19,000 faculty and staff, and a campus covering more than 80 city blocks, UAB is on the leading edge of teaching, research, health care, and community service.