Seacoast Region (New Hampshire)

The Seacoast Region is the southeast area of the U.S. state of New Hampshire that is centered around the city of Portsmouth.

Dover in Strafford County is the largest city in the region by population and is the oldest permanent settlement in New Hampshire.

The Seacoast Region was the first area of the state to be permanently settled by Europeans in the early 17th century.

Straddling the maritime border New Hampshire shares with Maine are the Isles of Shoals - White, Seavey, Lunging, and Star Islands.

Slightly farther inland, Interstate 95 (the Blue Star Turnpike) carries most of the through traffic between Maine and Massachusetts, while NH Route 101 carries New Hampshire's east–west traffic between the Seacoast Region and the inland portions of the state.

The Atlantic coast at North Hampton, New Hampshire
In this 2018 map by the N.H. Department of Transportation , New Hampshire's seacoast region (in lighter blue) lies at the southeastern corner of the state.