Franklin County was established in 1838, carved from portions of Kennebec, Oxford, and Somerset counties, reflecting the westward expansion and increasing settlement patterns in Maine at the time.

Geographically, the county is dominated by the Appalachian Mountains, including the expansive High Peaks Region which boasts some of Maine's tallest summits, contributing to its rugged and scenic landscape.

The economy is heavily reliant on outdoor recreation and tourism, with world-class ski resorts like Sugarloaf and Saddleback drawing significant visitors for skiing, snowboarding, and summer activities such as hiking and mountain biking.

Agriculture, particularly forestry and maple syrup production, has historically been and remains a vital industry, with numerous sugar bushes and logging operations sustaining traditional rural livelihoods.

Farmington, the county seat, is home to the University of Maine at Farmington, a public liberal arts college that serves as a major employer, educational institution, and cultural center for the region.

The Rangeley Lakes Region, a prominent part of the county, is a renowned four-season destination famous for its large interconnected lakes, ideal for fishing, boating, snowmobiling, and pristine wilderness exploration.

Demographically, Franklin County is among Maine's less populous counties, characterized by a predominantly rural population and an aging demographic trend consistent with many remote New England regions.

The Sandy River, a significant waterway flowing through the county, played a crucial role in its early development, providing water power for mills and supporting agricultural communities along its banks.

Historically, Farmington was a hotbed of abolitionist activity, with prominent citizens actively participating in the Underground Railroad and advocating for the end of slavery before the Civil War.

Despite its rural character, the county experiences seasonal population surges due to tourists, especially during winter ski season and summer vacation months, impacting local services and businesses.

Franklin County has a rich tradition of local craftsmanship and artisan work, reflecting its New England heritage, with many residents engaged in woodworking, pottery, and textile arts.

Population growth in Franklin County has generally been modest, with some periods of slight decline or stagnation, a trend often attributed to limited economic diversification beyond tourism and forestry.

While there are no UNESCO World Heritage Sites directly within the county, its vast forests and pristine waterways contribute significantly to the biodiversity and natural heritage of the larger Northern Forest region.

Local festivals often celebrate the county's agricultural roots, such as the numerous maple sugar open house events in early spring and various agricultural fairs showcasing local produce and livestock.

The county's geographical location in western Maine, bordering Canada, historically made it a gateway for trade and travel, influencing its cultural blend and remote character.