Mountain Lakes is a census-designated place

Census-designated place

A census-designated place is a concentration of population identified by the United States Census Bureau for statistical purposes. CDPs are delineated for each decennial census as the statistical counterparts of incorporated places such as cities, towns and villages...

 in the towns of Haverhill

Haverhill, New Hampshire

Haverhill is a town in Grafton County, New Hampshire, United States. The population was 4,697 at the 2010 census. Haverhill includes the villages of Woodsville, Pike, and North Haverhill, the historic town center at Haverhill Corner, and the district of Mountain Lakes...

 and Bath

Bath, New Hampshire

Bath is a town in Grafton County, New Hampshire, United States. The population was 1,077 at the 2010 census. Now a tourist destination and bedroom community for Littleton, the town is noted for its historic architecture, including the Brick Store and three covered bridges...

 in Grafton County, New Hampshire

Grafton County, New Hampshire

Grafton County is a county located in the U.S. state of New Hampshire. As of the 2010 census, the population was 89,118. Its county seat is North Haverhill, which is a village within the town of Haverhill. Until 1972, the county courthouse and other offices were located in downtown Woodsville, a...

. It had a population of 488 at the 2010 census.

The bulk of Mountain Lakes is in the town of Haverhill, surrounding two namesake lakes. The community extends to the north into the neighboring town of Bath, as far as the Wild Ammonoosuc River

Wild Ammonoosuc River

The Wild Ammonoosuc River is a tributary of the Ammonoosuc River, about long, in northwestern New Hampshire in the United States. Via the Ammonoosuc River, it is part of the watershed of the Connecticut River, which flows to Long Island Sound....

 and the Swiftwater Covered Bridge

Swiftwater Covered Bridge

Swiftwater Covered Bridge is a historic bridge over the Wild Ammonoosuc River in Bath, New Hampshire.The Paddleford truss bridge was built in 1849 and added to the National Register of Historic Places in 1976....

. New Hampshire Route 112

New Hampshire Route 112

New Hampshire Route 112 is a long east–west state highway in northern New Hampshire. The highway winds across the state, connecting Bath to Conway via the scenic and mountainous area of the White Mountain National Forest. Part of this highway, which runs through the White Mountains, is known as...

 travels across the northern part of Mountain Lakes, connecting Woodsville

Woodsville, New Hampshire

Woodsville is a census-designated place in the town of Haverhill in Grafton County, New Hampshire, U.S., along the Connecticut River at the mouth of the Ammonoosuc River. The population was 1,126 at the 2010 census...

 to the west with Kinsman Notch

Kinsman Notch

Kinsman Notch is a mountain pass located in the White Mountains of New Hampshire, United States. It is the westernmost of the major notches through the White Mountains...

 and North Woodstock

North Woodstock, New Hampshire

North Woodstock is a census-designated place in the town of Woodstock in Grafton County, New Hampshire. It had a population of 528 at the 2010 census....

to the east.