Westfield is a borough in Tioga County, Pennsylvania, United States.

[3] According to the United States Census Bureau, the borough has a total area of 1.0 square mile (2.6 km2), all of it land.

There were 551 housing units at an average density of 531.9 per square mile (205.4/km2).

28.9% of all households were made up of individuals, and 16.4% had someone living alone who was sixty-five years of age or older.

In the borough the population was spread out, with 25.3% under the age of eighteen, 7.1% from eighteen to twenty-four, 27.6% from twenty-five to forty-four, 20.3% from forty-five to sixty-four, and 19.8% who were sixty-five years of age or older.