Jardin de San Julian, TX has a population of 28 and is the 28,629th largest city in the United States. The population density is 1,798 per sq mi which is 1755% higher than the Texas average and 1885% higher than the national average. The median age in Jardin de San Julian is 24 which is approximately 30% lower than the Texas average of 34. In Jardin de San Julian, 55% of the population over 15 years of age are married, 0% speak English and 100% speak Spanish. 21% of Jardin de San Julian residents were born in Texas, 0% were born out of state, 0% were born outside of the United States and 79% were foreign born.