Middletown Area School District, is a small, suburban, public school district located in Middletown, Pennsylvania serving students in a portion of southern Dauphin County. The district includes the boroughs of Middletown and Royalton and Lower Swatara Township in Dauphin County. Middletown Area School District encompasses approximately . According to 2000 federal census data, it served a resident population of 18,355. By 2010, the district's population declined to 18,084 people. The educational attainment levels for the Middletown Area School District population (25 years old and over) were 79.2% high school graduates and 13.2% college graduates. The district is one of twelve public school districts operating in Dauphin County and one of the 500 public school districts of Pennsylvania.