Siesta Shores, TX has a population of 1,346 and is the 13,336th largest city in the United States. The population density is 1,834 per sq mi which is 1792% higher than the Texas average and 1925% higher than the national average. The median age in Siesta Shores is 23 which is approximately 32% lower than the Texas average of 34. In Siesta Shores, 48% of the population over 15 years of age are married, 7% speak English and 93% speak Spanish. 70% of Siesta Shores residents were born in Texas, 5% were born out of state, 1% were born outside of the United States and 24% were foreign born.