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Population <br />The following table summarizes population estimates for the United States, State, County, and City for <br />1990, 2000, 2010 and the last five years. <br />POPULATION ESTIMATES <br />The United States, State of California, County of Orange <br />and the City of Santa Anao) <br />United <br />California <br />County of <br />Year <br />States <br />State Total <br />Orange <br />Santa Ana <br />1990 <br />249,622,814 <br />29,758213 <br />2,410,668 <br />293,827 <br />2000 <br />282,162,411 <br />33,721,583 <br />2,831,799 <br />336,223 <br />201012> <br />307,528,001 <br />37,253,956 <br />3,010,232 <br />324,647 <br />2015 <br />318,474,252 <br />38,912,464 <br />3,152,314 <br />337,180 <br />2016 <br />320,808,676 <br />39,179,627 <br />3,172,222 <br />337,373 <br />2017 <br />323,032,791 <br />39,500,973 <br />3,198,968 <br />337,843 <br />2018 <br />325,032,134 <br />39,740,508 <br />3,213,275 <br />339,192 <br />2019 <br />327,044,416 <br />39,927,315 <br />3,222,498 <br />337,192 <br />(1) As of January 1 of Each Year <br />(2) As of April 1. <br />Source: California State Department of Finance, Demographic Research Unit. <br />55A2 <br />-121 <br />