Boaz is a city in Marshall and Etowah counties in the U.S. state of Alabama. The Marshall County portion of the city is part of the Albert…Boaz is a city in Marshall and Etowah counties in the U.S. state of Alabama. The Marshall County portion of the city is part of the Albertville Micropolitan Statistical Area. As of the 2020 census, the city's population was 10,107. Boaz was known for its outlet shops.