Language use, English-speaking ability, and linguistic isolation
data are currently collected in the American Community Survey.
In the past, various questions on language were asked in the
censuses from 1890 to 1970. The current language use questions,
in use since 1980, gather how many people speak a language other
than English at home, what languages are spoken, and how well
English is spoken. Native North American Languages Spoken at
Home in the United States and Puerto Rico: 2006-2010 (ACS) For
assistance, please contact the Census Call Center at
1-800-923-8282 (toll free) or visit ask.census.gov for further
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