U Penn School of Arts & Sciences Sustainability

Philadelphia's college and university category lists 327 entries, but that number hides the real question: can you actually reach them? Phone numbers sit on file for 285, and 284 carry a website, so most listings clear that bar. Zip 19104 alone holds 63 of the total, a heavy cluster near University City, with another 23 in 19122. Scan by zip first if you're narrowing to a neighborhood before you start calling.

Sponsored tags mark any paid placement in this category, and none are running right now, so the order you see is the directory's default sort. If you run one of these schools and the phone number or site link is wrong, you can claim the listing and update it, so the next person searching Philadelphia gets a working contact instead of a dead end.