41. South Dakota
> Most popular language: Dakota languages
> Residents who speak Dakota languages at home: 11,442
> Dakota languages-speaking population: 1.3%
The leading foreign language in South Dakota other than Spanish is Dakota. Dakota, along with Lakota, are two native American peoples that speak the Siouan languages of the Great Plains. Some 4.7% of state residents have Native American ancestry, and 1.3% speak Dakota. Of the 17,592 people who speak Dakota in the U.S., 11,442 reside in South Dakota.
> Most popular language: Arabic
> Residents who speak Arabic at home: 18,849
> Arabic-speaking population: 0.3%
Arabic is the most commonly spoken foreign language, aside from Spanish, in Tennessee, even though only 0.3% of state residents speak the language. Only 0.6% of those living in Tennessee can trace their ancestry to one of several Arabic-speaking countries.
> Most popular language: Vietnamese
> Residents who speak Vietnamese at home: 228,453
> Vietnamese-speaking population: 0.8%
In Texas, the leading foreign language after Spanish is Vietnamese, even though only 0.8% of the population currently speaks it at home. A considerably larger share of state residents speak Spanish, at nearly 28%. This is likely because Texas is one of the bordering states with Mexico.
> Most popular language: Portuguese
> Residents who speak Portuguese at home: 10,287
> Portuguese-speaking population: 0.3%
Portuguese is the most commonly spoken foreign language in three East Coast states — and Utah. Utah is home to an ever-growing Brazilian population, likely due to the Mormon Church’s influence on Brazilian immigration in the early 20th century. Today, 10,287 residents in Utah speak Portuguese, about 0.3% of the state’s population.
> Most popular language: French
> Residents who speak French at home: 6,850
> French-speaking population: 1.1%
Vermont is home to a considerable share of residents with French ancestry. Nearly 49,900 state residents can trace their ancestry to a French-speaking country, about 8% of the state population. Vermont also has the fourth-highest French-speaking population nationwide.