Trussville, AL has a population of 20,872 and is the 2,074th largest city in the United States. The population density is 626 per sq mi which is 581% higher than the Alabama average and 591% higher than the national average. The median age in Trussville is 39 which is approximately 2% higher than the Alabama average of 39. In Trussville, 71% of the population over 15 years of age are married, 98% speak English and 1% speak Spanish. 74% of Trussville residents were born in Alabama, 24% were born out of state, 0% were born outside of the United States and 2% were foreign born.