Real Estate Map for Delaware County
Caveat: this map is very slow to respond and may not work properly, but the link is below.
http://delcorealestate.co.delaware.pa.us/pt/maps/mapadv.aspx
Census Data for Upper Darby
Census Data Link – Map Version
Census Data Link – Table Version
https://www.census.gov/quickfacts/widget_240x420.php/?qfembed=5ri6nw1vb