Upper Darby School District (UDSD) is a large public school district of approximately 12,000 students in Upper Darby Township, Delaware County, Pennsylvania. It consists of an 8.3-square-mile (21 km2) area including Upper Darby Township, Clifton Heights borough, and Millbourne borough. According to 2009 local census data, it serves a resident population of 90,000. In 2009, the district residents’ per capita income was $20,699, while the median family income was $51,965. In the Commonwealth, the median family income was $49,501 and the United States median family income was $49,445, in 2010. More information...
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