Richfield is an unincorporated community and census-designated place (CDP) in Juniata and Snyder counties in Pennsylvania, United States.

Pennsylvania Route 35 is the main road through the community, leading northeast 15 miles (24 km) to Selinsgrove and southwest 17 miles (27 km) to Mifflintown, the Juniata county seat.

According to the United States Census Bureau, the Richfield CDP has a total area of 1.2 square miles (3.0 km2), of which 1.3 acres (5,176 m2), or 0.17%, are water.

There were 177 housing units at an average density of 211.3 per square mile (81.6/km2).

20.6% of all households were made up of individuals, and 13.1% had someone living alone who was 65 years of age or older.