Lake Lakengren (lock-n-grin, a Viking name meaning “Lake of the emerald green hills”) is an unincorporated community and census-designated place in Gasper Township, Preble County, Ohio, United States. The population was 3,387 at the 2020 census. A private planned community located  southwest of Eaton, the northern portion of Lake Lakengren is served by Eaton Community Schools and the southern portion is served by the Preble Shawnee Local School District.

History
Lake Lakengren had its start in the late 1960s as a planned community.

References

Unincorporated communities in Preble County, Ohio
Unincorporated communities in Ohio