Montague, TX has a population of 336 and is the 21,844th largest city in the United States. The population density is 263 per sq mi which is 172% higher than the Texas average and 191% higher than the national average. The median age in Montague is 38 which is approximately 10% higher than the Texas average of 34. In Montague, 61% of the population over 15 years of age are married, 92% speak English and 8% speak Spanish. 72% of Montague residents were born in Texas, 26% were born out of state, 0% were born outside of the United States and 2% were foreign born.