The township contains five cemeteries: Elizabethtown, Olive Branch, Thompson, Wheeling and Zion Chapel.

As of the census[1] of 2020, there were 1,849 people, 811 households, and 341 families living in the township.

There were 889 housing units at an average density of 25.05 inhabitants per square mile (9.7/km2).

60.2% of Washington Township residents were employed, working a mean of 40.3 hours per week.

The median gross rent in Gaston was $772 and the homeownership rate was 76.0%.