PSA:
This sort of invasively "friendly" comment can go very bad places and often seems to have a gendered component where men who wouldn't dare to do something so rude to another man don't hesitate to do it to a woman. It often is very obviously motivated by an attempt to chat her up in hopes of making a personal/romantic connection.
I have had multiple men ask me where I lived, men who sometimes had a clear and undeniable history of couching the same question quite differently when aimed at a man. They generally tried to be "chatty" and "friendly" with me in a way that assumed I was obligated to answer the question while stating up front that they understood if a man didn't want to answer a question like that on a public forum and was under no obligation to do so.
I'm not putting this here with any expectation that the person I am replying to nor any man here will care. I fully expect to be ROFLstomped for saying it on HN.
I'm putting it here for the women and other minorities who often seem to not realize that they can decline to answer such a question, flag it and even email the mods if they feel especially threatened by something going on. You don't have to "politely" answer extremely impolite questions that may have a clearly predatory intent or, at a minimum, that act with callous disregard for your personal safety by eliciting personal information you chose to not include in your comment and may not want publicized for some reason.