Well, if you see his about page you might see that the channel country has been set to United States but by reading his reply of many comments I'm sure he is from Bangladesh.
Here is one example, under one of his video he replied a comment by saying "Farmgate a paben 350 tk" meaning You will find it in Farmgate and cost will be 350tk and Farmgate is place in Dhaka, Bangladesh. Plus he used tk (Taka) which is Bangladeshi currency. I think that gives you a very pretty solid clue in which country he lives in.
If you want to know bit more about him then you can click here.