Demographics
Dallas County Is One of the Most Diverse in Texas
By 2014, Dallas County's population was roughly 39 percent Hispanic, 31.7 percent Anglo, and 23 percent African American.
Dallas County grew fast in the second half of the 20th century. The population went from 614,799 people in 1950 to 1,852,810 by 1990. That is more than triple in just four decades.
By 2014, the Handbook of Texas recorded the population as about 39 percent Hispanic, 31.7 percent Anglo, and 23.1 percent African American. This mix came from waves of people moving in over many decades — tied to railroad work, farming, factory jobs, and city growth. Today Dallas County is one of the most populous and diverse counties in the whole state of Texas.
Source to confirm: Handbook of Texas Online – Dallas County