ICON is a 501(c)(4) nonprofit membership organization that welcomes both individuals and religious organizations as members. Voting control in ICON is vested exclusively in its member organizations.

Currently, the work of ICON is directed by 23 member organizations:

• Affinity, Indianapolis
• Bloomington Friends Meeting (Quaker) – www.bloomington.in.us/~quaker/
• Broadway United Methodist Church, Indianapolis – http://www.broadwayumc.org/
• Central Christian Church, Indianapolis – http://www.indyccc.org/ccchome.html
• Circle Unitarian Universalist Fellowship, Indianapolis – www.cuuf.org/
• Congregation Beth-El Zedeck, Indianapolis – www.bez613.org/
• Eastside Peace & Justice Forum of Cumberland First Baptist Church, Indianapolis
• First Congregational Church, Indianapolis – www.fccindy.org/
• Orthodox Catholic Church of America, Indianapolis – www.orthodoxcatholicchurch.org/index.html
• Jesus Metropolitan Community Church, Indianapolis – www.jesusmcc.org/
• Lockerbie Central United Methodist Church, Indianapolis
• North United Methodist Church, Indianapolis – www.northchurchindy.org/
• Plymouth Congregational Church, Ft. Wayne – www.plymouthfw.org/
• St. Alban’s Episcopal Church, Indianapolis – www.stalbansindy.indydio.org/
• St. Luke's United Methodist Church, Indianapolis – www.stlukesumc.com/
• St. Peter's United Church of Christ, Carmel – www.stpeterscarmel.org/
• NEW! – Temple Israel, Gary - www.templeisraelmiller.org
• The Church Within, Indianapolis – www.thechurchwithin.org/
• Unitarian Universalist Congregation, Bloomington – www.uubloomington.org/
• NEW! – Unitarian Universalist Community Church of Hendricks County, Danville - www.uuccdanville.org/
• NEW! – Unitarian Universalist Church of Indianapolis – www.uui.org/
• Unitarian Universalist Church, Lafayette – http://uulafayette.org/
• Unitarian Universalist Congregation, Fort Wayne – www.uufortwayne.org/