Bad Axe – Full Member

Baldwin – Full Member

Bancroft – Full Member

Bangor – Full Member

Bangor Charter Township – Associate

Bangor Economic Development Corporation – Associate

Bangor Housing Commission – Associate

Baraga – Full Member

Baroda – Full Member

Barry Township – Associate

Barryton – Full Member

Barton Hills Village – Full Member

Bath Charter Township – Associate

Bath Township Public Library – Associate

Battle Creek – Full Member

Bay City – Full Member

Bay Township – Associate

Bear Creek Township – Associate

Bear Lake – Full Member

Beaver Township – Associate

Beaverton – Full Member

Bedford Township – Associate

Beecher Metropolitan District – Associate

Belding – Full Member

Belknap Township – Associate

Bellaire – Full Member

Bellaire District Fire Department – Associate

Belleville – Full Member

Bellevue – Full Member

Belvidere Township – Associate

Bentley Township – Associate

Benton Harbor – Full Member

Benton Charter Township – Associate

Benton Harbor Library – Associate

Benton Harbor/St. Joseph Sewage – Associate

Benton Township – Associate

Benton Township/Potterville District Library – Associate

Benzonia – Full Member

Berkley – Full Member

Berlin Charter Township – Associate

Berrien County – Associate

Berrien Springs – Full Member

Bessemer – Full Member

Bessemer Area Sewer Authority – Associate

Betsie Lake Utilities Authority – Associate

Beulah – Full Member

Beverly Hills – Full Member

Big Rapids – Full Member

Bingham Farms – Full Member

Birch Run – Full Member

Birmingham – Full Member

Blaine Township – Associate

Blissfield – Full Member

Bloomer Township – Associate

Bloomfield Hills – Full Member

Bloomingdale – Full Member

Boston Township – Associate

Bourret Township – Associate

Boyne City – Full Member

Boyne District Library – Associate

Branch Township – Associate

Breckenridge – Full Member

Breedsville – Full Member

Breitung Charter Township – Associate

Bridgewater Township – Associate

Bridgman – Full Member

Brighton – Full Member

Brighton Area Fire – Associate

Brighton Charter Township – Associate

Brighton District Library – Associate

Britton – Full Member

Bronson – Full Member

Bronson Township – Associate

Brooklyn – Full Member

Broomfield Township – Associate

Brown City – Full Member

Brownstown Charter Township – Associate

Buchanan – Full Member

Buckley – Full Member

Buena Vista Charter Township – Associate

Bullard Sanford Memorial Library – Associate

Burlington – Full Member

Burr Oak – Full Member

Burton – Full Member

Butman Township – Associate

Byron – Full Member