"Where are you from" is more common (at least in U.S. English).
In my opinion, this is the preferred option when meeting someone new.
The difference is a bit more emphasis on the verb "to be/are" instead of the action of "coming/being from" somewhere as is common in other languages. The meaning is identical though.
1) "Where are you from?" implies that you want to know what city/state/country they consider "home," and that you assume it's someplace other than where you are right now. This may be confusing, since where someone is "from" isn't necessarily where they live. It also can be embarrassing to assume, for example, that a person of a certain ethnic background must "come from" some other place. It might be a good idea to separate the idea of "what is your family/ethnic background?" from "where do you live right now?"
"Where are you from?"
"I'm originally from Oslo, Norway, but I live in Chicago."
2)
"Where do you come from" sounds kind of awkward and outdated. I think this is because it includes the present-tense verb "do" in a question about a past-tense action (coming from somewhere). This is perfectly understandable and you can say this if you prefer - I'd still suggest the other way though.
"Where do you come from?"
"I come from a land beyond the sea, overrun by trolls and dragons!"
3) "Where did you come from" would be correct if you want to know "where were you immediately before you came to this location we're at right now?" This can also be used to express surprise at the person's sudden arrival or unexpected actions.
"Where did you come from?"
"I was next door, but now I'm here to rescue you!"
Best Answer
They are similar. They are both causative sentences. However, the first sentence uses the present tense. It will be interpreted as a stative meaning. It describes a situation. It means that I am worried now because of something you've said or done. The second sentence means that something you did in the past made me worried in the past. It has more of a dynamic feeling as opposed to a stative feeling. The second sentence does not say whether I'm still worried. I'm probably not, but I could be.