Bad Axe – Full Member

Baldwin – Full Member

Bancroft – Full Member

Bangor – Full Member

Bangor Charter Township – Limited Associate

Bangor Economic Development Corporation – Limited Associate

Bangor Housing Commission – Limited Associate

Baraga – Full Member

Baroda – Full Member

Barry Township – Limited Associate

Barryton – Full Member

Barton Hills Village – Full Member

Bath Charter Township – Limited Associate

Bath Township Public Library – Limited Associate

Battle Creek – Full Member

Bay City – Full Member

Bay Township – Limited Associate

Bear Creek Township – Limited Associate

Bear Lake – Full Member

Beaugrand Township – Limited Associate

Beaver Township – Limited Associate

Beaverton – Full Member

Bedford Township – Limited Associate

Beecher Metropolitan District – Associate

Beecher Metropolitan Water & Sewer – Full Associate

Belding – Full Member

Belknap Township – Limited Associate

Bellaire – Full Member

Bellaire District Fire Department – Limited Associate

Belleville – Full Member

Bellevue – Full Member

Belvidere Township – Limited Associate

Bentley Township – Limited Associate

Benton Harbor – Full Member

Benton Charter Township – Full Associate

Benton Harbor Library – Limited Associate

Benton Harbor/St. Joseph Sewage – Limited Associate

Benton Township – Limited Associate

Benton Township/Potterville District Library – Limited Associate

Benzonia – Full Member

Berkley – Full Member

Berlin Charter Township – Limited Associate

Berrien County – Associate

Berrien Springs – Full Member

Bessemer – Full Member

Bessemer Area Sewer Authority – Limited Associate

Betsie Lake Utilities Authority – Limited 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 – Limited Associate

Blissfield – Full Member

Bloomer Township – Limited Associate

Bloomfield Hills – Full Member

Bloomingdale – Full Member

Boston Township – Limited Associate

Bourret Township – Limited Associate

Boyne City – Full Member

Boyne District Library – Limited Associate

Branch Township – Limited Associate

Breckenridge – Full Member

Breedsville – Full Member

Breitung Charter Township – Limited Associate

Bridgewater Township – Limited Associate

Bridgman – Full Member

Brighton – Full Member

Brighton Area Fire – Full Associate

Brighton Charter Township – Limited Associate

Brighton District Library – Limited Associate

Britton – Full Member

Bronson – Full Member

Bronson Township – Limited Associate

Brooklyn – Full Member

Broomfield Township – Limited Associate

Brown City – Full Member

Brownstown Charter Township – Limited Associate

Buchanan – Full Member

Buckley – Full Member

Buena Vista Charter Township – Full Associate

Bullard Sanford Memorial Library – Limited Associate

Burlington – Full Member

Burr Oak – Full Member

Burton – Full Member

Butman Township – Limited Associate

Byron – Full Member