In the middle of the state they may be farther away from each other, I'm near Philadelphia, and well, they are everywhere. Tag services handle plates and title (they go together), Driver License Centers handle driving tests, photo licenses, and a few other services.
I went into google maps and did a 'tag service near fairfield PA' and got back several in fairfield. But look for one that does same day title and tag service, they can hand it to you on the spot. Being an AAA member, the fee was trivial (if not waived) at my local AAA office. I don't know what the 'same day' tag agencies charge, alas, call them, they'll tell you. When you transfer your license at a PA Drivers License center (which you may/may not need a test (written and/or driving)), they will issue you an immediate camera card, and you can have a same day real-id done there, one stop. A lot of the stuff on the website is for the rush that occurred when they first opened the real-id stuff.
Note a driving test will require making an appointment, and you need to pass the written if they make you take that, first.
I am expecting that to accomplish all of this, you'll need to make two stops. The license first, then the tags. And I would not be surprised if you could not do it all in the same day. The wait times vary at the license centers based on size, et al.
Remember Real-ID requires multiple proofs of identity and residence. So the bigger issue would be bringing something to prove you live there (at the new address), such as a utility bill, etc. See the website, the federal law makes the list of items they can take be very restrictive. They have no leeway to make nice. But you can get a non-real ID license first, and then months later go back for a real-id one.