IMSA Sections

Arizona
State of Arizona

Atlantic
New Brunswick, Newfoundland and Labrador, Nova Scotia, Prince Edward Island

British Columbia
British Columbia, Yukon

Canadian Prairie
Alberta, Manitoba, Northwest Territories, Saskatchewan

Central
Kansas

Far Western
California, Hawaii, Nevada

Florida
Florida and the Caribbean Islands

Indiana
Indiana

Michigan
Michigan

Middle Atlantic
District of Columbia, Delaware, Maryland, Virginia

Midwestern
Illinois, Iowa, Minnesota, Missouri, Wisconsin

New England
Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, Vermont

New Jersey
New Jersey, Pennsylvania (East of the Susquehanna River) 

New Mexico
New Mexico

New York
New York

Northwest
Alaska, Idaho, Montana, Oregon, Washington

Ontario
Ontario, Quebec

Rocky Mountain
States of Colorado, Nebraska, North Dakota, South Dakota, Utah, Wyoming

Southeastern
States of Alabama, Georgia, Mississippi, North Carolina, South Carolina, Tennessee

Southwestern
Arkansas, Louisiana, Oklahoma, Texas, Mexico

Tri-State
Kentucky, Ohio, Pennsylvania (West of the Susquehanna River), West Virginia

Sustaining
Consultants, Distributors, Installers, Manufacturers

Foreign:
Outside North America