All Boy Scouts of America units are owned and operated by chartered organizations. Of the 103,158 units (Boy Scout troops, Cub Scout packs and Venturing crews) and 3,615,306 youth members in 2010:
Each unit is chartered by a local branch of an organization, not at the national level. The following tables combine all chartering organizations that fall into a religious denomination or national organization.
The following table lists chartered organizations by faith-based groups (top 25), then civic groups, then educational groups:
This table gives more information about which type of units are sponsored by which Chartered Organizations, but is more out of date than total units/total youth table:
References
Chartered organizations of the Boy Scouts of America Wikipedia(Text) CC BY-SA