Geography of Merrimack County, New Hampshire

Geography of Merrimack County, New Hampshire

Merrimack County, located in the central part of New Hampshire, is a region of diverse geography, characterized by its rolling hills, scenic rivers, and charming lakes. From the bustling city of Concord to the rural communities and pristine wilderness areas, Merrimack County offers a rich tapestry of landscapes and natural features.


According to Constructmaterials, Merrimack County experiences a humid continental climate, with four distinct seasons characterized by cold winters and warm summers. The region’s climate is influenced by its inland location, elevation, and proximity to the Atlantic Ocean, which moderates temperatures and contributes to precipitation throughout the year.

Winters in Merrimack County are cold and snowy, with average highs ranging from 30°F to 40°F (-1°C to 4°C) and lows often dropping below freezing. Snowfall is common, with the county receiving an average of 50 to 60 inches of snow annually. Cold air masses from the northwest can bring bitterly cold temperatures and occasional blizzard conditions, particularly in January and February.

Summer in Merrimack County is warm and humid, with average highs ranging from 75°F to 85°F (24°C to 29°C). Thunderstorms are common during the summer months, bringing heavy rainfall and occasional severe weather. Despite the summer storms, the region’s lush vegetation and abundant sunshine make it an ideal destination for outdoor activities such as hiking, camping, and boating.

Spring and fall are transitional seasons, with mild temperatures and changing weather patterns. These seasons offer a mix of sunny days, cool nights, and occasional rainfall, making them ideal for exploring the region’s natural beauty and enjoying outdoor activities such as leaf peeping, birdwatching, and apple picking.

Mountains and Hills:

Merrimack County is home to several mountain ranges and hills that contribute to its scenic beauty and outdoor recreational opportunities. The eastern part of the county is characterized by the Belknap Mountain Range, which includes peaks such as Mount Kearsarge and Mount Sunapee. These mountains offer hiking, skiing, and panoramic views of the surrounding landscape.

In addition to the Belknap Mountains, Merrimack County is intersected by several other hills and ridges, including the Canterbury Shaker Village, Mount Rowe, and Mount Shaw, each offering its own unique hiking and outdoor experiences. The county’s hills and ridges provide habitat for a variety of plant and animal species, as well as opportunities for outdoor enthusiasts to explore and enjoy the natural beauty of New Hampshire.

Rivers and Lakes:

Merrimack County is traversed by several rivers and lakes that provide valuable water resources and recreational opportunities for residents and visitors alike. The Merrimack River, after which the county is named, flows from the northern part of the county to the southern border, offering opportunities for fishing, boating, and kayaking.

Other notable rivers in Merrimack County include the Contoocook River, the Blackwater River, and the Suncook River, each contributing to the county’s ecological diversity and providing habitat for fish, wildlife, and vegetation. Additionally, the county is home to several lakes, including Lake Winnisquam, Lake Sunapee, and Pleasant Lake, each offering its own unique recreational opportunities and scenic beauty.

Forests and Conservation Areas:

Merrimack County is renowned for its expansive forests and conservation areas that protect critical habitat and provide opportunities for outdoor recreation. The Bear Brook State Park, located in the southern part of the county, encompasses over 10,000 acres of forested hills, wetlands, and scenic hiking trails, making it one of the largest state parks in New Hampshire.

Other notable conservation areas in Merrimack County include the Winslow State Park, the Rollins State Park, and the Mount Kearsarge State Forest, each offering opportunities for hiking, picnicking, and wildlife viewing. These protected areas provide habitat for a variety of plant and animal species, as well as opportunities for outdoor enthusiasts to explore and enjoy the natural beauty of New Hampshire.

Historical and Cultural Landmarks:

Merrimack County is home to several historical and cultural landmarks that reflect its rich history and heritage. The Canterbury Shaker Village, located in the town of Canterbury, preserves the legacy of the Shakers, a religious sect known for their simple way of life and craftsmanship. The village features historic buildings, gardens, and exhibits that offer insight into Shaker culture and history.

Other notable landmarks in Merrimack County include the New Hampshire State House, located in the city of Concord, which is the oldest state capitol in the United States still in use. The State House features a distinctive gold dome and is open to the public for guided tours and exhibits on New Hampshire’s history and government.


Merrimack County, New Hampshire, offers a diverse and picturesque landscape that reflects the natural beauty and cultural heritage of the Granite State. From its rolling hills and scenic rivers to its historic landmarks and charming towns, the geography of Merrimack County invites exploration, relaxation, and appreciation for the wonders of New Hampshire.

As stewards of this remarkable region, residents and visitors alike cherish and protect Merrimack County’s natural resources for future generations to enjoy. Whether hiking in the mountains, paddling on the rivers, or exploring the historic landmarks, Merrimack County invites all who visit to experience the charm and beauty of central New Hampshire.