Quote Originally Posted by cleung View Post
Thank you all for the good information and kind advice. But honestly, my intent of asking the question was simply trying to confirm or learn whether I need to put a comma after a city and/or a state, as shown in my sentence, and I wasn't really thinking about a list of two, three or four items, much less Oxford comma, which I had not even heard before.

In any case, I appreciate the great help from all of you.

We all agree that there should be a comma between a city and state. We disagree about the other comma, so you will have to choose. English is like that sometimes.