Brattleboro, VT has a population of 7,322 and is the 5,018th largest city in the United States. The population density is 1,739 per sq mi which is 2573% higher than the Vermont average and 1820% higher than the national average. The median age in Brattleboro is 43 which is approximately 1% higher than the Vermont average of 43. In Brattleboro, 41% of the population over 15 years of age are married, 94% speak English and 1% speak Spanish. 42% of Brattleboro residents were born in Vermont, 51% were born out of state, 2% were born outside of the United States and 5% were foreign born.