Black or African American alone, percent(a) 13.3%. American Indian and Alaska Native alone, percent(a) 1.3%. Asian alone, percent(a) 5.7%. There were 37,144,530 non-Hispanic blacks, which comprised 12.1% of the population. This number increased to 42 million according to the 2010 United States Census, when including Multiracial African Americans, making up 14% of the total U.S. population. In 1860, at the start of the Civil War, the African-American population had increased to 4.4 million, but the percentage rate dropped to 14% of the overall population of the country. The vast majority were slaves, with only 488,000 counted as 'freemen'. By 1900, the black population had doubled and reached 8.8 million. In 2016 US Census Bureau estimated 46,778,674 African Americans in the United States meaning that 14.5% of the total American population of 323.1 Million is . African-American Population. In 1790, when the first census was taken, African Americans numbered about 760,000—about 19% of the population. In 1860, at the start of the Civil War, the African-American population increased to 4.4 million, but the percentage rate dropped to 14% of the overall population of the country. African-American population proportions, both nationally and state-by-state, have since the days of institutionalized slavery and the Civil War in the United States . According to the U.S. Census Bureau, 12.3% of the U.S. population is black, and 12.5% is Hispanic. Gallup Poll results from March 26-28, however, show that . Feb 2, 2018 - American population of Iowa in. 2050, according to Woods &. Pool Economics Inc.(2017). African Americans will constitute 6.8 percent of the. African Americans comprise the United States' largest racial minority, accounting for 12.1 percent of the total population in 2000. This population is concentrated . More than 40 million blacks live in the United States, making up around 13% of the nation's population. Here are five facts about the U.S. black population today, .