Mabank, TX has a population of 3,415 and is the 8,171st largest city in the United States. The population density is 474 per sq mi which is 389% higher than the Texas average and 423% higher than the national average. The median age in Mabank is 31 which is approximately 8% lower than the Texas average of 34. In Mabank, 56% of the population over 15 years of age are married, 89% speak English and 7% speak Spanish. 78% of Mabank residents were born in Texas, 17% were born out of state, 1% were born outside of the United States and 4% were foreign born.