Sylacauga, AL has a population of 12,696 and is the 3,270th largest city in the United States. The population density is 627 per sq mi which is 582% higher than the Alabama average and 592% higher than the national average. The median age in Sylacauga is 38 which is approximately 2% lower than the Alabama average of 39. In Sylacauga, 54% of the population over 15 years of age are married, 97% speak English and 3% speak Spanish. 84% of Sylacauga residents were born in Alabama, 15% were born out of state, 0% were born outside of the United States and 2% were foreign born.