Nepali Nani,
If I may ask, what prompts you in choosing that place? Did you hear about it from someone? Did you get a job offer? Are you joining college there?
Quick google result shows that there has been Bhutanese refugee settlement in that area.
youtube video on Nepali cultural program:
https://www.youtube.com/watch?v=fYMfH8kTFhw

http://magicvalley.com/lifestyles/relationships-and-special-occasions/bhutanese-refugees-adapt-to-twin-falls-life/article_5baf46f4-a526-5a57-8108-59d0ec459fa9.html
College of Southern Idaho should have some Nepalese as evident from this program there:
http://fineartscenter.csi.edu/viewEvents.asp?id=12194

Hope this helps.