Alabaster, AL has a population of 32,269 and is the 1,317th largest city in the United States. The population density is 1,282 per sq mi which is 1293% higher than the Alabama average and 1314% higher than the national average. The median age in Alabaster is 37 which is approximately 4% lower than the Alabama average of 39. In Alabaster, 64% of the population over 15 years of age are married, 90% speak English and 8% speak Spanish. 64% of Alabaster residents were born in Alabama, 29% were born out of state, 1% were born outside of the United States and 7% were foreign born.