Sumiton, AL has a population of 2,735 and is the 9,283rd largest city in the United States. The population density is 525 per sq mi which is 471% higher than the Alabama average and 480% higher than the national average. The median age in Sumiton is 40 which is approximately 3% higher than the Alabama average of 39. In Sumiton, 61% of the population over 15 years of age are married, 99% speak English and 1% speak Spanish. 85% of Sumiton residents were born in Alabama, 14% were born out of state, 1% were born outside of the United States and 0% were foreign born.