Limestone Township, Union County, Pennsylvania

As of the census[4] of 2000, there were 1,572 people, 526 households, and 444 families residing in the township.

The population density was 76.5 inhabitants per square mile (29.5/km2).

There were 620 housing units at an average density of 30.2 per square mile (11.7/km2).

There were 526 households, out of which 39.0% had children under the age of 18 living with them, 77.8% were married couples living together, 3.8% had a female householder with no husband present, and 15.4% were non-families.

13.3% of all households were made up of individuals, and 6.7% had someone living alone who was 65 years of age or older.