 Both its total area and land area are larger than the U.S. state of Rhode Island.Per 2018 U.S. Census Bureau projections, the population of the county was 4,698,619; demographically 62.84% White, 19.02% Black, 8.41% other races, and 42.55% Hispanic.As of the 2010 Census, the population of the county was 4,092,459, White Americans made up 56.6% of Harris County's population; non-Hispanic whites represented 33.0% of the population.