 In the 1980 United States Census the largest ancestry group reported in Texas was English, forming 3,083,323 or 27% of the population.Their ancestry primarily goes back to the original thirteen colonies and for this reason many of them today simply claim American ancestry.As of 2010, 37% of Texas residents had Hispanic ancestry; these include recent immigrants from Mexico, Central America, and South America, as well as Tejanos, whose ancestors have lived in Texas as early as the 1700s.