Zoning Map for Delaware County
https://dcpd.maps.arcgis.com/apps/webappviewer/index.html?id=a6467e1bc8f34d2faa3d7d2e4099097a
Historical Overhead Photo Downloads for Delaware County
https://datacommons.maps.arcgis.com/apps/View/index.html?appid=10af5f75f9f94f01866359ba398cb6a9
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
Proposed Land Development Map for Delaware County
https://dcpd.maps.arcgis.com/apps/webappviewer/index.html?id=29974498816a40e38cc012790ea23e55