Geography of Addison County, Vermont

Geography of Addison County, Vermont

Addison County, nestled in the western part of the state of Vermont, USA, is a region distinguished by its picturesque landscapes, fertile farmland, and historic villages. Encompassing an area of approximately 808 square miles, the county offers a mix of rolling hills, valleys, and pristine waterways. In this comprehensive overview, we will explore the geography, climate, rivers, lakes, and other notable features that define Addison County. Check acronymmonster to learn more about the state of Vermont.


Addison County is bordered by the counties of Chittenden to the north, Washington to the east, Rutland to the south, and Essex in New York state to the west. The county seat and largest town is Middlebury, while other significant communities include Vergennes, Bristol, and Brandon.

The topography of Addison County is characterized by its diverse terrain, with the Green Mountains dominating the eastern part of the county and the Champlain Valley extending to the west. The county is intersected by several major transportation routes, including US Route 7, which runs north to south through the county, and Vermont Route 22A, which follows the western shore of Lake Champlain.


Addison County experiences a humid continental climate, with four distinct seasons characterized by warm summers, cold winters, and ample precipitation throughout the year. The region’s climate is influenced by its inland location and the prevailing weather patterns of the northeastern United States.

Summer temperatures in Addison County typically range from the 70s to 80s°F (21-27°C) during the day, with cool, comfortable nights. Humidity levels are moderate, and afternoon thunderstorms are common during the summer months, providing relief from the heat.

Winter temperatures in Addison County typically range from the 20s to 30s°F (-6 to -1°C) during the day, with colder temperatures at night. Snowfall is common during the winter months, with an average annual snowfall of around 80 inches, creating opportunities for winter sports such as skiing, snowboarding, and snowshoeing.

Spring and fall are transitional seasons in Addison County, with temperatures gradually warming in the spring and cooling in the fall. These seasons are favored by residents and visitors alike for outdoor activities such as hiking, biking, and enjoying the county’s natural beauty.

Rivers and Lakes:

Addison County is intersected by several rivers, streams, and lakes, which play important roles in the region’s ecology, economy, and recreational activities.

The Otter Creek is one of the major rivers in Addison County, flowing from south to north through the central part of the county. The river provides opportunities for fishing, kayaking, and canoeing, as well as scenic views and wildlife habitat along its banks.

In addition to the Otter Creek, Addison County is home to several smaller streams and creeks, including the New Haven River, the Middlebury River, and the Lemon Fair River. These waterways provide opportunities for fishing, tubing, and picnicking, attracting residents and visitors alike to their shores.

Lake Champlain, located along the western border of Addison County, is one of the largest lakes in the United States and offers opportunities for fishing, boating, swimming, and sailing, as well as picnicking and camping along its scenic shores.

Natural Features:

In addition to its rivers and lakes, Addison County is known for its natural beauty and outdoor recreational opportunities, including parks, forests, and hiking trails.

The Green Mountain National Forest, located in the eastern part of Addison County, is a scenic forest that features wooded trails, mountain peaks, and alpine meadows. The forest offers opportunities for hiking, camping, fishing, and wildlife viewing, as well as skiing and snowmobiling in the winter months.

The Robert Frost Trail, located in the southern part of Addison County, is a scenic trail that follows the path of the renowned poet Robert Frost. The trail offers opportunities for hiking, birdwatching, and enjoying the county’s rural landscapes, as well as visiting historic sites and landmarks associated with Frost’s life and work.

The Mount Independence State Historic Site, located on Lake Champlain, is a preserved Revolutionary War site that features historic fortifications, interpretive exhibits, and scenic views of the lake. The site offers opportunities for hiking, picnicking, and learning about the region’s rich history and heritage.


Addison County, Vermont, offers a diverse and picturesque landscape characterized by its rolling hills, fertile valleys, and pristine waterways. From its historic towns and cultural landmarks to its outdoor recreational opportunities and natural beauty, the county has much to offer residents and visitors alike. As stewards of this remarkable landscape, residents and local organizations are committed to preserving and protecting Addison County for future generations to enjoy. Through conservation efforts, sustainable development, and responsible stewardship of natural resources, Addison County will continue to thrive as a vibrant and cherished part of the Vermont landscape.