Professionally Managed Main Street Programs are communities with a professionally managed downtown including a board of directors and chief executive officer, and often additional staff. This category includes Downtown Improvement Districts, where business owners within a specified area of the downtown form a group to govern their activities related to revitalizing the area. This category also includes some Professionally Managed Main Street Programs that have taken the additional step of being recognized by the National Main Street Center as Designated Communities and must adhere to national standards in order to achieve this status.

Bridgeport Downtown Special Services District
CityCenter Danbury
New London Main Street
Simsbury Main Street Partnership
Main Street Waterbury
Westville Village Renaissance Alliance, New Haven
Upper Albany, Hartford