Some of the places named Crystal Lake, with city populations as of 2000 marked in brackets, are:
- Crystal Lake in Nevada County, California
- Crystal Lake, Connecticut (1459)
- Crystal Lake, Florida
- Crystal Lake (0) in Broward County, Florida
- Crystal Lake, Polk County, Florida (5341)
- Crystal Lake in Washington County, Florida
- Crystal Lake, Illinois (38'000)
- Crystal Lake Park, Illinois
- Crystal Lake, Iowa (285)
- Crystal Lake, Vermont near Barton, Vermont
- Crystal Lake, Wisconsin
- Crystal Lake Township, Michigan (960) and the lake in Benzie County
- Crystal Lake Park, Missouri (457) in St. Louis County
- Crystal Lakes, Missouri (383) in Ray County
- Crystal Lakes, Ohio (1411)