structural:scholar_edition, information:classification
Language

While many languages are spoken in the United States, English is by far the most commonly spoken and written. Although there is no official language at the federal level, some laws, such as U.S. naturalization requirements, standardize English, and most states have declared it the official language. Three states and four U.S. territories have recognized local or indigenous languages in addition to English, including Hawaii (Hawaiian), Alaska (twenty Native languages), South Dakota (Sioux), American Samoa (Samoan), Puerto Rico (Spanish), Guam (Chamorro), and the Northern Mariana Islands (Carolinian and Chamorro). In total, 169 Native American languages are spoken in the United States. In Puerto Rico, Spanish is more widely spoken than English.

According to the American Community Survey in 2010, some 229 million people out of the total U.S. population of 308 million spoke only English at home. About 37 million spoke Spanish at home, making it the second most commonly used language. Other languages spoken at home by one million people or more include Chinese (2.8 million), Tagalog (1.6 million), Vietnamese (1.4 million), French (1.3 million), Korean (1.1 million), and German (1 million).