what county is interlachen fl in
Sponsored Topics. Interlachen is a town in Putnam County, Florida, United States. The population was 1,475 at the 2000 census. The town is part of the Palatka Micropolitan Statistical Area. Interlachen is located at 29Â°37â²22â³N 81Â°53â²41â³W / 29.62278Â°N 81.89472Â°W / 29.62278; -81.89472 (29.622709, -81.894680).