Largest U.S. Counties by Population

Summary: Largest U.S. counties by population

This database lists the population of U.S. counties as of July 1 in each year from largest to smallest. Data are based on multi-race category estimates from the U.S. Bureau of the Census.  For more information on how these estimates are generated, see Population by Race/Ethnicity and Age Background.

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Geographic Coverage: Counties

Periodicity: Annually

Series Begins/Ends: 1970/2017

Data Source: Bureau of the Census

Updated:  Sep. 03, 2018 Next update: Aug. 01, 2019

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