Mifflinburg Area School District
 The Mifflinburg Area School District is a small rural public school district serving western Union County Pennsylvania. Centered on the borough of Mifflinburg it also serves Buffalo Township New Berlin Limestone Township West Buffalo Township Lewis Township Hartleton and Hartley Township. Mifflinburg Area School District encompasses approximately 217 square miles (560 km2). According to 2000 federal census data the District served a resident population of 17867.