The 2010 United States Census reported that Union City had a population of 69,516. The population density was 3,570.6 people per square mile (1,378.6/km2). The racial makeup of Union City was 16,640 (23.9%) White, 4,402 (6.3%) Black, 329 (0.5%) Native American, 35,363 (50.9%) Asian, (20.0% Filipino, 12% Indian, 12% Chinese, 3.7% Vietnamese, 0.9% Korean, 0.6% Japanese, 0.6% Pakistani, 0.4% Burmese, 0.2% Cambodian), 892 (1.3%) Pacific Islander, 7,253 (10.4%) from other races, and 4,637 (6.7%) from two or more races. Hispanic or Latino of any race were 15,895 persons (22.9%).