Llano Grande, TX has a population of 3,024 and is the 8,778th largest city in the United States. The population density is 1,855 per sq mi which is 1813% higher than the Texas average and 1947% higher than the national average. The median age in Llano Grande is 35 which is approximately 1% higher than the Texas average of 34. In Llano Grande, 59% of the population over 15 years of age are married, 13% speak English and 87% speak Spanish. 59% of Llano Grande residents were born in Texas, 8% were born out of state, 1% were born outside of the United States and 32% were foreign born.