A resident of Menlo Park, California, Leslie Koonce holds a bachelor of business administration from Campbell University. Leslie Koonce served as the owner of Koonce Financial Services from 1982 to 2018. He is a past president and a current member of the Menlo Park Kiwanis Club.

An organization consisting of over 15,000 clubs with adult and youth members, Kiwanis Club's mission is to improve communities and lives. A chapter of the organization, the Menlo Park Kiwanis Club, holds weekly meetings for members at the Allied Arts Guild.

An initial fee is required to join the club and become a member. Fees for memberships differ for seniors, those that attend the club’s weekly luncheons, and those that don’t attend regular meetings but who hold special service memberships.

Members of the Menlo Park Kiwanis Club serve multiple organizations located in the local community. They work to support a range of charitable causes including Tour de Cure of Diabetes, St. Anthony’s Dining Hall, the City of Menlo Park, and Menlo-Atherton High School graduates, among others.