Lufkin, TX has a population of 36,112 and is the 1,166th largest city in the United States. The population density is 1,056 per sq mi which is 989% higher than the Texas average and 1065% higher than the national average. The median age in Lufkin is 35 which is approximately 1% higher than the Texas average of 34. In Lufkin, 54% of the population over 15 years of age are married, 77% speak English and 21% speak Spanish. 76% of Lufkin residents were born in Texas, 13% were born out of state, 0% were born outside of the United States and 10% were foreign born.