Any of the major drug store chain outlets (CVS, RiteAid, Walgreens etc.) will have mini-lab photo services. This is true in Boston, New York City or just about anywhere. Outside the inner cities you can also find WalMart, Costco etc.
The real question is what kind of quality to you desire?
The mini-labs will process your film and produce very good quality 4x6 prints (just like you get at home). And, just like at home, issues will arise if you later decide to scan the negatives.
You see, the mini-lab's print processing includes digital "healing" (think Photoshop) such that the prints will appear flawless. But if you subsequently scan the negatives (like I do) you may well find all kinds of nicks, scratches and even fuzz and hair marks. That's because, unlike the prints - the negatives are not "healed".
If the pics are primarily snappies and you just want the 4x6 prints - go to any nearby drugstore. If you want "clean" negatives - you have a better chance of obtaining so at a pro shop.
I doubt this is any different than the situation "at home" wherever your "home" is.
BTW: If you bring the negatives back home and have additional prints made there - no worries. The mini-lab there will also "heal" the prints.