Hidalgo, TX has a population of 13,449 and is the 3,110th largest city in the United States. The population density is 1,820 per sq mi which is 1777% higher than the Texas average and 1909% higher than the national average. The median age in Hidalgo is 28 which is approximately 19% lower than the Texas average of 34. In Hidalgo, 58% of the population over 15 years of age are married, 3% speak English and 97% speak Spanish. 55% of Hidalgo residents were born in Texas, 3% were born out of state, 2% were born outside of the United States and 40% were foreign born.