The Lark Branch Library opened for business on January 18, 2001, after four years of planning and development. In May 1997 McAllen citizens elected to implement a half-cent sales tax for economic development, which by the fall of 1999 included the construction of two branch libraries in the north and south areas of McAllen.

Located in north McAllen, the Lark Branch Library strives to meet the needs of its diverse patrons by offering a bilingual collection of fiction, nonfiction, and media, and a variety of programs that promote literacy in the community.