Arley, AL has a population of 477 and is the 19,824th largest city in the United States. The population density is 127 per sq mi which is 38% higher than the Alabama average and 40% higher than the national average. The median age in Arley is 43 which is approximately 11% higher than the Alabama average of 39. In Arley, 69% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 74% of Arley residents were born in Alabama, 25% were born out of state, 1% were born outside of the United States and 0% were foreign born.