Which language is used in Las Vegas?

Answer 1

The most widely spoken language in Las Vegas and in all of Clark County is English.

Spanish is the next most widely spoken language, followed by Tagalog/Filipino.

Virtually ALL residents of Las Vegas speak Either English or Spanish (or both) as either first languages or second languages.

Las Vegas is an international city, and there are hundreds (possibly thousands) of languages spoken there by tourists as well as immigrants.

Common visitor languages include:

1. Arabic
   
2. Chinese, Mandarin
   
3. Chinese, Cantonese
   
4. Chinese, Taiwanese
5. Danish
6. French
7. German
8. Hebrew
9. Italian
10. Japanese
    
11. Korean
12. Norwegian
13. Portuguese
14. Spanish
15. Swedish

Answer 2

English, spanish, and many other languages because hotels and restaurants deal with many international visitors.
English.
English, generally, although hotels are used to dealing with international visitors, so have good multi lingual support.