Region 1 North Atlantic covers New England and Northern New York, USA, as well as Quebec, Canada. Region 1 currently has more than 30 quartets and 22 chartered choruses including the 2020 Harmony Classic Div. A Champion Chorus, Millennium Magic pictured above.

Region 2 Border Lakes is comprised of Michigan in the United States and part of Ontario, Canada. The region is home to several Division A and AA choruses that have placed in the top 5 at international competition over the years including, most recently, Grand Traverse Show Chorus, which placed 4th in the 2017 Harmony Classic Competition. Featured above is The Vibe Quartet, who competed in the 2019 International Quartet Semifinals.

Region 3 is home to the winners of the most international gold medals in Sweet Adelines history, the Melodeers Chorus, pictured above. The chorus has brought home seven international gold medals, most recently in 2015. The Midwest Harmony Region spans an area of the United States from South Bend, Indiana in the east to Madison, Wisconsin in the west and down to Peoria, Illinois.

Region 4 Harmony Heartland includes sections of Alabama, Illinois, Indiana, Kentucky, Ohio, Tennessee and West Virginia in the United States. The region is home to two International Champion Choruses (including five-time winners Gem City Chorus), five International Champion Quartets and four Harmony Classic Champion Choruses.