Chart of top 14 Non-English Languages Spoken in Utah (2010)

In 2000, 87.5% of all state residents five years of age or older spoke only English at home, a decrease from 92.2% in 1990.

Reference 1: Percentage of population (as of 2010).

Reference 2: Spanish, German, Navajo, French, Pacific Island languages including Chamorro, Hawaiian, Ilocano, Indonesian, and Samoan, Chinese, Portuguese, Vietnamese, Japanese and Arapaho.

Source: http://en.wikipedia.org/wiki/Utah