Question: I wish to use the following sentence as the comment on a form field. I have already come up with a short-form label for the field. This text is meant to explain the field in a bit more detail:

**The country [where] you come from.**

The question is: is this "where" needed there, can be used there (optional) or cannot be used there (error).

As English is not my mother language, sometimes these things come up. Please don't be hard on me.

EDIT: I'm somewhat overwhelmed by the answers and appearing complexity of the issue. Yes, I have an input field and I wish to write a label to it. We all know the basic phrases like "I come from Australia" - "Where do you come from?". Cannot it be turned around in the form like "The country you come from"? 

And if the following would be correct: "The country I live **in**"? Or I may only put the preposition to the end if it's not an independent clause but a subordinate one (terms may not be correct, forgot them): I've returned to the country I live **in**.

Answer: 
Erm. Isn't it "The city THAT you come from?" as in "The city that you originate from".
The other way is practically an innuendo.
[This may be my tenuous grasp of english afforded by being a Mancunian.]
In *spoken* US English, it's fine with or without `where` -- **but** I wouldn't use either on a website. **Here's why**:

I am a native US English speaker. I would only say `I come from America` if I was traveling in another country, or if I had moved to another country and was THERE ALREADY. I would never say it while I was in America.

So the saying `I come from America` implies that you and I are somewhere OTHER than America.

So if you say on your website, `The country [where] you come from`, it would imply that your visitors are AWAY from their home country, or that your visitors have MOVED away from their original country.

I know it's subtle, but if you ask it online, it will sound slightly strange and "off".

---

Instead, ask exactly what you want to know. If you want to know where they live *right now*, say one of the following:

1. `Your country of residence`
2. `The country where you live`
3. `The country you live in` (Yes, in actual practical US English, the `in` can go at the end.)

If you want to know the country where people consider themselves a native, then say `The country you consider yourself a native of`. The word `native` means different things to different people, though. Similarly, you could say `Your home country`, but again, `home` means different things to different people.

Or if your visitors truly HAVE come from a different country and ARE NOW in a new country, say `The country you came from`. (Note I said **CAME** and not COME.) You could also say `Your country of origin` but that sounds robotic and bureaucratic.

I know you probably already deployed your form, but I hope this will bring you some more clarity.