German is the most commonly spoken language at home other than English and Spanish in 9 U.S. states
Estimated number of speakers nationally: 905,326
States where it’s the most commonly spoken language at home other than English and Spanish: Idaho, Montana, North Dakota, Wyoming, Colorado, Ohio, Indiana, Kentucky, South Carolina
https://www.businessinsider.com.au/what-is-the-most-common-language-in-every-state-map-2019-6
Source: This map shows the most commonly spoken language in every US state, excluding English and Spanish - Business Insider