Twin, AL has a population of 353 and is the 21,548th largest city in the United States. The population density is 105 per sq mi which is 14% higher than the Alabama average and 15% higher than the national average. The median age in Twin is 48 which is approximately 24% higher than the Alabama average of 39. In Twin, 62% of the population over 15 years of age are married, 99% speak English and 1% speak Spanish. 79% of Twin residents were born in Alabama, 20% were born out of state, 0% were born outside of the United States and 1% were foreign born.