Maybe, maybe not.
In this era of relaxed regulation and rollback of what used to be required commitments to keep one's license come renewal time, PSAs are no longer automatic at a lot of stations ... especially in major markets. At one station group that I consult, they have a special low rate for government and non-profits, but they are still paid commercials. The three most active clients in that rate category is their city and county (events and employment openings), their state (promotion of consumer programs), and a couple of faith-based non-profits who advertise ...
-- wait for it --
... car donations.
One of the direct response agencies I work with has a campaign available by a well-known organization raising funds to fight cancer, and guess what their spot advertises? And the station gets $25 every time a listener in their area calls in and makes a donation.
Welcome to the modern version of "public service advertising". Most stations I know even restrict the usual Ad Council spots to filler between public affairs programs on Sunday morning.
As for which of the 12 pages, scroll back and look for yourself, please.