Knights of Columbus- nationally est. 1882
Mason City's Council 1006- established in 1905.
Meet the first Tuesday of every month at 7:30pm
Columbia Club Hall on South Taft Avenue in Mason City.
Knights of Columbus
Iowa Knights of Columbus
Court Joan of Arc #152- Catholic Daughters of the Americas
Meetings at 7pm on the fourth Tuesday of every month except for January and August
Holy Family Church Hall, 722 N. Adams
Court Joan of Arc #152
National CDA website