Boaz, AL has a population of 9,639 and is the 4,046th largest city in the United States. The population density is 662 per sq mi which is 620% higher than the Alabama average and 631% higher than the national average. The median age in Boaz is 35 which is approximately 8% lower than the Alabama average of 39. In Boaz, 58% of the population over 15 years of age are married, 86% speak English and 13% speak Spanish. 76% of Boaz residents were born in Alabama, 13% were born out of state, 0% were born outside of the United States and 11% were foreign born.