Blue Mound, TX has a population of 3,263 and is the 8,383rd largest city in the United States. The population density is 6,465 per sq mi which is 6569% higher than the Texas average and 7036% higher than the national average. The median age in Blue Mound is 32 which is approximately 6% lower than the Texas average of 34. In Blue Mound, 52% of the population over 15 years of age are married, 49% speak English and 50% speak Spanish. 62% of Blue Mound residents were born in Texas, 13% were born out of state, 0% were born outside of the United States and 25% were foreign born.