Jasper, AL has a population of 14,137 and is the 2,967th largest city in the United States. The population density is 495 per sq mi which is 438% higher than the Alabama average and 447% higher than the national average. The median age in Jasper is 40 which is approximately 4% higher than the Alabama average of 39. In Jasper, 57% of the population over 15 years of age are married, 97% speak English and 2% speak Spanish. 76% of Jasper residents were born in Alabama, 22% were born out of state, 0% were born outside of the United States and 2% were foreign born.