The town's proximity to the Atlantic Ocean and its location on the banks of the Royal River, which empties into Casco Bay less than a mile away, means it is a prime location as a harbor. Ships were built in the harbor mainly between 1818 and the 1870s, at which point demand declined dramatically. Meanwhile, the Royal River's four waterfalls within Yarmouth, whose Main Street sits about 45 feet above sea level, resulted in the foundation of almost sixty mills between 1674 and 1931.
The annual Yarmouth Clam Festival attracts around 120,000 people (around thirteen times the number of residents in the town) over the course of the three-day weekend.
Today, Yarmouth is a popular dining destination, with (as of December 2016) fourteen sit-down restaurants. This equates to an average of just over one restaurant per square mile of land area.
Yarmouth is easily accessed via two exits on each side of Interstate 295. U.S. Route 1 also passes through the town to the west of I-295.
It has been designated a Tree City USA community every year since 1979; 38 years ago