Zarate, TX has a population of 20 and is the 28,789th largest city in the United States. The population density is 1,063 per sq mi which is 841% higher than the Texas average and 1074% higher than the national average. The median age in Zarate is 0 which is approximately 100% lower than the Texas average of 34. In Zarate, 100% of the population over 15 years of age are married, 0% speak English and 100% speak Spanish. 100% of Zarate residents were born in Texas, 0% were born out of state, 0% were born outside of the United States and 0% were foreign born.