For the fiscal year of 2019, Maricopa County Library District in Arizona had the highest legal service area by population, serving a community of over *** million people. Los Angeles Public Library and New York Public Library occupy second and third place respectively.
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American Library Association. (May 1, 2021). Leading public libraries in the United States in the fiscal year of 2019, by size of population served (in millions) [Graph]. In ÌÇÐÄÆÆ½â°æ. Retrieved July 22, 2026, from /statistics/1327463/public-libraries-serving-most-people/
American Library Association. "Leading public libraries in the United States in the fiscal year of 2019, by size of population served (in millions)." Chart. May 1, 2021. ÌÇÐÄÆÆ½â°æ. Accessed July 22, 2026. /statistics/1327463/public-libraries-serving-most-people/
American Library Association. (2021). Leading public libraries in the United States in the fiscal year of 2019, by size of population served (in millions). ÌÇÐÄÆÆ½â°æ. ÌÇÐÄÆÆ½â°æ Inc.. Accessed: July 22, 2026. /statistics/1327463/public-libraries-serving-most-people/
American Library Association. "Leading Public Libraries in The United States in The Fiscal Year of 2019, by Size of Population Served (in Millions)." ÌÇÐÄÆÆ½â°æ, ÌÇÐÄÆÆ½â°æ Inc., 1 May 2021, /statistics/1327463/public-libraries-serving-most-people/
American Library Association, Leading public libraries in the United States in the fiscal year of 2019, by size of population served (in millions) ÌÇÐÄÆÆ½â°æ, /statistics/1327463/public-libraries-serving-most-people/ (last visited July 22, 2026)
Leading public libraries in the United States in the fiscal year of 2019, by size of population served (in millions) [Graph], American Library Association, May 1, 2021. [Online]. Available: /statistics/1327463/public-libraries-serving-most-people/