Linn, TX has a population of 671 and is the 17,734th largest city in the United States. The population density is 14 per sq mi which is 86% lower than the Texas average and 85% lower than the national average. The median age in Linn is 37 which is approximately 8% higher than the Texas average of 34. In Linn, 63% of the population over 15 years of age are married, 21% speak English and 79% speak Spanish. 81% of Linn residents were born in Texas, 9% were born out of state, 0% were born outside of the United States and 11% were foreign born.