Local lodges are the most important structural part of the union. All of the other structural elements - sections, divisions, districts, councils, and departments - exist solely to help local lodges conduct their business more effectively.

Lodges are formed when workers organize themselves in order to bargain collectively with their employer. Our Constitution allows the International to grant a charter to any local lodge when 35 or more persons residing in the United States or Canada meet the qualifications of membership.

Each local lodge, within the framework of the Brotherhood's Constitution, adopts by-laws specifying the rules and regulations governing the conduct of the local lodge. Local lodge members elect the officers of their lodge and vote on contracts and other important matters.

Because the International Brotherhood of Boilermakers is such a diverse union, our local lodges range in size from several thousand members to a few dozen. They are as diverse as our membership is - representing workers in many of North America's most vital industries, in locations stretching from Hawaii to Newfoundland.

District Lodge 11 [2]

Local 11, Helena, Montana [4]

Local S20, Louisville, Kentucky [5]

Local 27, St. Louis, Missouri [6]

Local 40, Elizabethtown, Kentucky [7]

Local 83, Kansas City,Missouri [8]

Local 85, Toledo, Ohio [9]

Local D106, Mason City, Iowa [10]

Local 105, Piketon, Ohio [11]

Local 107, Waukesha, Wisconsin [12]

Local 108, Birmingham, Alabama [13]

Local 128, Toronto, Ontario [14]

Local 146, Edmonton, Alberta [15]

Local 169, Detroit, Michigan [16]

Local 359, Burnaby, British Columbia [18]

Local 374, Hammond, Indiana [19]

Local 449, Sturgeon Bay, Wisconsin [20]

Local 484, Meredosia, Illinois [21]

Local 502, Tacoma, Washington [22]

Local 627, Phoenix, Arizona [23]

National Transient Lodge [24]