The Our Lady of the Lake Council 9240 was founded in 1986, through the efforts of Charter Grand Knight Al Herron, Charter Deputy Grand Knight Ed DiGiovanni, and the blessings of Msgr. Joseph Chotin and Deacon Jimmy Seghers. Since then, the council has grown from the original 59 charter members, to over 350. The Our Lady of the Lake Council works closely with the Our Lady of the Lake Parish in Mandeville providing funds for various projects, its members being active participants in their parish. The council also annually hosts many charity events, whereby allowing it to support many charitable organizations. Our council hosts a large number of council activities throughout the year. These activities include the Annual Lenten Season Fish Fries, Annual Children's Christmas Shopping Spree Golf Tournament, and the Christmas Children's Shopping Spree.

Our council is also proud to support the following programs: Adopt a Highway, Alzheimer Research, Boy Scouts Troop 611, Boy Scouts Venture Crew 822, Covington Food Bank, Excellence in Religious Education, Families Helping Families, Our Lady of the Lake Festival of the Lake, Kids' Konnection, Louisiana Youth Programs, Our Lady of the Lake Youth Mexico Mission Trip, Our Lady of the Lake Church, St. Michael Special School, St. Tammany Association of Retarded Citizens, St. Tammany Right to Life, St. Vincent De Paul Society, Samaritan Center, Support for Vocations, Taste of Tammany Foodfest/Auction, Toys for Tots, and the Youth Expansion Program.