US language data · 2024 ACS 5-year

Languages spoken in District of Columbia

Of 640,841 residents of District of Columbia aged 5 and over, 122,363 (19.1%) speak a language other than English at home, and 35,729 (5.6%) speak English less than "very well".

The most common non-English language is Spanish with 60,423 speakers, followed by French (incl. Cajun) (10,192).

Limited-English-proficiency counts are the best public proxy for local demand for interpreters and document translation in healthcare, courts, schools and social services.

Source: U.S. Census Bureau, American Community Survey 2024 5-year estimates, table B16001. Estimates have margins of error.