Park District Community Support Grant Program Act This bill establishes the Park District Community Support Grant Program under which the Department of the Interior may award grants to special purpose districts, including park districts, for projects to maintain land and water for parks and other outdoor recreation purposes; operate new or renovate existing outdoor recreation facilities; and build, operate, maintain, or refurbish indoor or outdoor facilities owned and operated, in whole or in part, by a park district and used by or to support the public.