Rancho Viejo CDP, TX has a population of 271 and is the 23,003rd largest city in the United States. The population density is 7,392 per sq mi which is 7525% higher than the Texas average and 8059% higher than the national average. The median age in Rancho Viejo CDP is 33 which is approximately 3% lower than the Texas average of 34. In Rancho Viejo CDP, 42% of the population over 15 years of age are married, 0% speak English and 100% speak Spanish. 70% of Rancho Viejo CDP residents were born in Texas, 0% were born out of state, 0% were born outside of the United States and 30% were foreign born.