Wallingford is home to a large variety of industries and major corporations spanning the spectrum of the medical, health care, service, hi-tech specialty metal manufacturing and research development. The development of the Barnes Industrial Parks, Casimir Pulaski Industrial Park, Centract Park and MedWay Industrial Park have greatly contributed to a diversified tax base. An Interchange Zone which permits restrictive commercial development of office parks, research and development centers and hotels was created at the intersection of interstate 91 and Route 68. The Bristol-Myers Squibb Company, the town's largest taxpayer, has established a research and development facility in Wallingford's MedWay Industrial Park. The Bristol-Myers Squibb Company moved out in 2017 and the structures were demolished in 2018.