St. Albans Town Hall, St. Albans (Town), Vermont. Still functional Town Offices. – Mfwills, CC BY-SA 3.0 – Wikimedia Commons Franklin County is located in Vermont. About 49,946 people live here (as of 2020). Between 2010 and 2020, the population grew from 47,746 to 49,946. The region is at 218 meters above sea level. The area covers about 1,792.0 square kilometers. The region is divided into 15 Municipalities. The region was founded in 1792. The name originates from Benjamin Franklin (American polymath and statesman) Franklin County is county in Vermont, United States.