Contoocook Railroad Bridge and Depot

Merrimack County, located in the state of New Hampshire, has a rich history that dates back to the founding of the United States. The county was officially established in 1823 and is named after the Merrimack River, which flows through it. Prior to its establishment, the area was inhabited by Native American tribes, including the Pennacook and Abenaki peoples.

During the colonial era, European settlers built towns and villages along the Merrimack River, attracted by its fertile land and access to water transportation. Concord, the county seat and state capital, was founded in 1725 and became an important political and economic center in the region. It played a vital role during the American Revolution as the site of the Battles of Lexington and Concord in 1775, which marked the beginning of the war.

In the 19th century, Merrimack County experienced significant industrialization and economic growth. The construction of canals and railroads connected the county to national markets, leading to the expansion of manufacturing industries, including textiles, paper mills, and granite quarries. The city of Franklin, known as the "Granite Capital of the World," became a major center for granite production, supplying materials for iconic structures like the Library of Congress and the Brooklyn Bridge.

In the 20th century, Merrimack County continued to develop its industrial and agricultural sectors. The Great Depression had a significant impact on the area, but it rebounded with the growth of defense-related industries during World War II. The county also saw advancements in education and culture, with the establishment of colleges, museums, and cultural organizations.

Today, Merrimack County remains an important hub of commerce, government, and culture in New Hampshire. Its historical significance, natural beauty, and vibrant communities make it a unique and desirable place to live and visit.