Marshall County is a county of the state of Alabama, United States. As of the 2020 census the population was 97,612. Its county seat is Guntersville. A second courthouse is in Albertville. Its name is in honor of John Marshall, famous Chief Justice of the United States. Marshall County is a dry county, with the exception of the five cities of Albertville, Arab, Grant, Guntersville, and Boaz. Marshall County comprises the Albertville, AL Micropolitan Statistical Area, which is also included in the Huntsville-Decatur-Albertville, AL Combined Statistical Area.

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.