A 75-year-old, privately held company with a dairy background, Cumberland Farms has nearly 600 convenience stores stretching along the Eastern Seaboard, and sister company Gulf Oil has more than 2,000 branded gas-station sites in 26 states (plus Puerto Rico and District of Columbia).

Cumberland Farms is the largest convenience-store chain and gasoline marketer in the Northeast. Its network of retail stores, gas stations and a support system including petroleum and grocery distribution operations spans 11 states across the Northeast and Florida.

Gulf Oil distributes motor fuels and has 12 proprietary oil terminals and a network of more than 75 other supply terminals.

Q2 2015 Update

In June, ArcLight Capital Partners, a Boston-based private-equity firm, agreed to acquire the Gulf Oil fuel business from the Haseotes family. Joe Petrowski, formerly the chief executive officer of Cumberland Farms (also owned by the Haseotes family), will serve as the head of the new company.

Headquarters:Framingham, Massachusetts
No. of Stores:549
Average Store Size:2,500-4,000 sq. ft.
Rank Last Year:19
States of Operation: Connecticut, Delaware, Florida, Maine, Massachusetts, New Hampshire, New Jersey, New York, Pennsylvania, Rhode Island, Vermont