Southeast Delco School District is a midsized, regional suburban public school district located in Delaware County, Pennsylvania. The District encompasses approximately . It serves the residents of Collingdale, Darby Township, Folcroft, and Sharon Hill. The district is adjacent to the City of Philadelphia. The district was created from the merging of smaller, local school districts. According to 2000 federal census data, it served a resident population of 30,732. In 2009, the district residentsâ per capita income was $17,418, while the median family income was $47,321. In the Commonwealth, the median family income was $49,501 and the United States median family income was $49,445, in 2010.