Townville is a borough in Crawford County, Pennsylvania, United States.

According to the United States Census Bureau, Townville has a total area of 0.51 square miles (1.33 km2), all land.

There were 125 housing units at an average density of 218.7 per square mile (84.4/km2).

17.6% of all households were made up of individuals, and 7.6% had someone living alone who was 65 years of age or older.

None of the families and 1.4% of the population were living below the poverty line, including no under eighteens and 3.3% of those over 64.