do you know where is it or it is??

I've always thought it was correct to say:
do you know where it is??

But I was googling this sentence and this website gave me:
do you know where is it --> 57.300
do you know where it is --> 36.800

So, I don't know anymore which one is right...
Please, someone help me out!!!!!!!!

Ignore the Google search - on this sort of phrase it really will not help.

You are right that "Do you know where it is?" is correct.

"Do you know where is it" is incomplete [or incorrect]. Many of the Google results are poorly punctuated: "Do you know? Where is it?" is one of these. Some are non-native English trying to ask "where is it?" and getting it wrong.

Gosh,
I was used to do it all the time and compare the results google gives me!!!!!!!!

So, if I'm unsure regarding a grammatical structure, I really need to ask you guys... I'm going to increase my post so much lately!!!!!!!

Thanks a lot, guys! You are very nice teachers!!!

The correcto  one is "Do you know where it is", because this is an indirect question.  The interrogative pronoun is in the middle of the sentence

Unfortunately, this is an area of English which may be slowly undergoing a change.  Not only do non-native speakers have difficulty with it, but a surprising number of educated native speakers seem to be using the inverted structure "incorrectly" more and more.  It is so prevalent that some books are calling it neither a direct question nor an indirect question, but a semi-indirect question!

It is probably better to stick to the "correct" version until so many people are doing it that the grammar experts finally give up and say it's perfectly fine! 

You will find, however, that native speakers usually generate the "incorrect" form only when the indirect question is quite long -- almost never with indirect questions of very few words.

CJ