Shelby, AL has a population of 1,374 and is the 13,208th largest city in the United States. The population density is 73 per sq mi which is 20% lower than the Alabama average and 19% lower than the national average. The median age in Shelby is 37 which is approximately 3% lower than the Alabama average of 39. In Shelby, 58% of the population over 15 years of age are married, 99% speak English and 0% speak Spanish. 76% of Shelby residents were born in Alabama, 23% were born out of state, 0% were born outside of the United States and 1% were foreign born.