Timber Hills is an unincorporated community and census-designated place (CDP) in Lebanon County, Pennsylvania, United States.

[2] Timber Hills is located in southwestern Lebanon County at 40°14′56″N 76°28′40″W / 40.24889°N 76.47778°W / 40.24889; -76.47778 (40.248972, -76.477786),[3] in the southeastern part of South Londonderry Township.

Lebanon, the county seat, is 9 miles (14 km) northeast of Timber Hills.

Its outlet, Conewago Creek, is a southwest-flowing tributary of the Susquehanna River.

25.5% of all households were made up of individuals, and 15.9% had someone living alone who was 65 years of age or older.