Brent, AL has a population of 4,902 and is the 6,558th largest city in the United States. The population density is 558 per sq mi which is 507% higher than the Alabama average and 516% higher than the national average. The median age in Brent is 38 which is approximately 1% lower than the Alabama average of 39. In Brent, 45% of the population over 15 years of age are married, 98% speak English and 1% speak Spanish. 78% of Brent residents were born in Alabama, 21% were born out of state, 1% were born outside of the United States and 1% were foreign born.