Fish Lake Beach is one of the largest, privately owned campgrounds in Illinois, with 580 seasonal sites occupying the majority of the 113-acre property along with 60 overnight campsites. Fish Lake Beach has been family owned and operated for over eight amazing decades. Our brief story in pictures and how we got started is just below. Fish Lake Beach has become a camping tradition or a home-away-from-home for generations of families. We take pleasure in providing a friendly and fun experience.