Since 1986, the library system has purchased adult and children's materials in certain world languages to serve the county's diverse population. 

Print materials are available at the following libraries in both the adult and children's collections unless otherwise noted:

Chinese: Bethesda, Germantown, Long Branch, Marilyn J. Praisner, Potomac, Quince Orchard, Rockville Memorial, Silver Spring, Twinbrook, Wheaton

French: Bethesda, Silver Spring

Korean: Marilyn J. Praisner, Rockville Memorial, Twinbrook, Wheaton

Russian: Rockville Memorial

Spanish: Aspen Hill, Bethesda, Damascus, Germantown, Long Branch, Rockville Memorial, Silver Spring, Twinbrook, Wheaton, White Oak

Spanish materials for children only: Chevy Chase, Kensington Park, Little Falls, Marilyn J. Praisner, Poolesville, Quince Orchard.

Vietnamese: Long Branch, Rockville Memorial, Wheaton