Lamesa, TX has a population of 9,367 and is the 4,138th largest city in the United States. The population density is 1,834 per sq mi which is 1792% higher than the Texas average and 1925% higher than the national average. The median age in Lamesa is 35 which is approximately 2% higher than the Texas average of 34. In Lamesa, 64% of the population over 15 years of age are married, 61% speak English and 39% speak Spanish. 82% of Lamesa residents were born in Texas, 11% were born out of state, 0% were born outside of the United States and 7% were foreign born.