Midway is an unincorporated census-designated place in Adams County, Pennsylvania, United States.

According to the United States Census Bureau, Midway has a total area of 1.7 square miles (4.4 km2), all land.

There were 923 housing units at an average density of 1,359.5 per square mile (524.9/km2).

21.9% of all households were made up of individuals, and 9.1% had someone living alone who was 65 years of age or older.

The census-designated place is in the Conewago Valley School District.