New Hampshire Route 31 is a 56.13 miles (90.3 km) long north–south state highway

State highway

State highway, state road or state route can refer to one of three related concepts, two of them related to a state or provincial government in a country that is divided into states or provinces :#A...

 in southern New Hampshire

New Hampshire

New Hampshire is a state in the New England region of the northeastern United States of America. The state was named after the southern English county of Hampshire. It is bordered by Massachusetts to the south, Vermont to the west, Maine and the Atlantic Ocean to the east, and the Canadian...

. It runs from Mason

Mason, New Hampshire

Mason is a town in Hillsborough County, New Hampshire, United States. The population was 1,382 at the 2010 census. Mason, together with Wilton, is home to Russell-Abbott State Forest.-History:...

 on the Massachusetts

Massachusetts

The Commonwealth of Massachusetts is a state in the New England region of the northeastern United States of America. It is bordered by Rhode Island and Connecticut to the south, New York to the west, and Vermont and New Hampshire to the north; at its east lies the Atlantic Ocean. As of the 2010...

 border to Goshen

Goshen, New Hampshire

Goshen is a town in Sullivan County, New Hampshire, United States. The population was 810 at the 2010 census.- History :Incorporated in 1791, Goshen was first settled in 1768 as a part of Saville...

.

The southern terminus of NH 31 is in Mason at the Massachusetts state line, where, as Greenville Road, the road becomes Massachusetts Route 31. The northern terminus of NH 31 is in Goshen at New Hampshire Route 10

New Hampshire Route 10

New Hampshire Route 10 is a north–south state highway in the U.S. state of New Hampshire. Its southern terminus is at the Massachusetts state line in the town of Winchester. In Massachusetts the highway becomes Massachusetts Route 10. Total length of the highway is .-Route description:NH 10...

.

Route description

NH 31 intersects New Hampshire Route 124

New Hampshire Route 124

New Hampshire Route 124 is a long east–west highway in southern New Hampshire. It runs from Marlborough to the Massachusetts border....

 within 500 yards (457.2 m) of the Massachusetts border. It passes through Greenville

Greenville, New Hampshire

Greenville is a town in Hillsborough County, New Hampshire, United States. The population was 2,105 at the 2010 census.The primary settlement in town, where 1,108 people resided at the 2010 census, is defined as the Greenville census-designated place and is located at the junction of New Hampshire...

, Wilton

Wilton, New Hampshire

- Demographics :As of the census of 2000, there were 3,743 people, 1,410 households, and 1,023 families living in the town. The population density was 145.3 people per square mile . There were 1,451 housing units at an average density of 56.3 per square mile...

, Lyndeborough

Lyndeborough, New Hampshire

Lyndeborough is a town in Hillsborough County, New Hampshire, United States. The population was 1,683 at the 2010 census.- History :Originally granted by the Massachusetts General Court to veterans of New England's first war with Canada from Salem, Massachusetts, the area was known as Salem-Canada...

, Greenfield

Greenfield, New Hampshire

Greenfield is a town in Hillsborough County, New Hampshire, United States. The population was 1,749 at the 2010 census. Greenfield is home to the Crotched Mountain Rehabilitation Center, to Greenfield State Park, and to part of the Wapack Trail.- History :...

, Bennington

Bennington, New Hampshire

Bennington is a town in Hillsborough County, New Hampshire, United States. The population was 1,476 at the 2010 census.The main village of the town, where 381 people resided at the 2010 census, is defined as the Bennington census-designated place , and is located on the Contoocook River at the...

, Antrim

Antrim, New Hampshire

Antrim is a town in Hillsborough County, New Hampshire, United States. The population was 2,637 at the 2010 census. The primary settlement in the town, where 1,397 people resided at the 2010 census, is defined as the Antrim census-designated place and is located at the intersection of U.S. Route...

, Hillsborough

Hillsborough, New Hampshire

Hillsborough, frequently spelled Hillsboro, is a town in Hillsborough County, New Hampshire, United States. The population was 6,011 at the 2010 census...

, Windsor

Windsor, New Hampshire

Windsor is a town in Hillsborough County, New Hampshire, United States. The population was 224 at the 2010 census. It is the location of the Wediko Children's Services Summer Program and of , a summer adventure and travel camp founded in 1961.- History :...

, and Washington

Washington, New Hampshire

Washington is a town in Sullivan County, New Hampshire, United States. The population was 1,123 at the 2010 census. Situated in a hilly, rocky, forested area, and with 26 lakes and ponds, Washington is a picturesque resort area...

 on its way to Goshen.

NH 31 runs concurrent

Concurrency (road)

A concurrency, overlap, or coincidence in a road network is an instance of one physical road bearing two or more different highway, motorway, or other route numbers...

 with New Hampshire Route 9 for a distance of approximately 3.2 miles (5.1 km) where it passes on the west side of Franklin Pierce Lake

Franklin Pierce Lake

Franklin Pierce Lake is a reservoir located in Hillsborough County in southern New Hampshire, United States, in the towns of Hillsborough and Antrim. It is named for Franklin Pierce, the 14th president of the United States, who was born in Hillsborough at a site now inundated by the lake...

 in the town of Hillsborough

Hillsborough, New Hampshire

Hillsborough, frequently spelled Hillsboro, is a town in Hillsborough County, New Hampshire, United States. The population was 6,011 at the 2010 census...

. In other places, the road merges with U.S. Route 202

U.S. Route 202

U.S. Route 202 is a highway stretching from Delaware to Maine, also passing through the states of Pennsylvania, New Jersey, New York, Connecticut, Massachusetts, and New Hampshire....

 and New Hampshire Route 101

New Hampshire Route 101

New Hampshire Route 101 is a state-maintained highway in southern New Hampshire extending from Keene to Hampton Beach. It is the major east–west highway in the southern portion of the state....

 for a distance.

Local road names

Route 31 uses the following names as it passes through different towns:

Mason

• Greenville Road

Greenville

• Fitchburg
  Fitchburg, Massachusetts
  Fitchburg is the third largest city in Worcester County, Massachusetts, United States. The population was 40,318 at the 2010 census. Fitchburg is home to Fitchburg State University as well as 17 public and private elementary and high schools.- History :...
  
   Road

Wilton

• Greenville Road
• Gibbons Highway (concurrency with NH 101
  New Hampshire Route 101
  New Hampshire Route 101 is a state-maintained highway in southern New Hampshire extending from Keene to Hampton Beach. It is the major east–west highway in the southern portion of the state....
  
  )
• Island Street
• Burns Hill Road
• Forest Road

Lyndeborough

• Forest Road

Greenfield

• Forest Road
• Sawmill Road

Bennington

• Greenfield Road
• School Street
• Pierce Road
• Hancock Road
• concurrency with U.S. Route 202
  U.S. Route 202
  U.S. Route 202 is a highway stretching from Delaware to Maine, also passing through the states of Pennsylvania, New Jersey, New York, Connecticut, Massachusetts, and New Hampshire....
  
  

Antrim

• Main Street (concurrency with US-202)
• Clinton Road
• Old North Branch
  North Branch Contoocook River
  The North Branch of the Contoocook River is a river located in southwestern New Hampshire in the United States. It is a tributary of the Contoocook River, part of the Merrimack River watershed....
  
   Road
• Franklin Pierce
  Franklin Pierce
  Franklin Pierce was the 14th President of the United States and is the only President from New Hampshire. Pierce was a Democrat and a "doughface" who served in the U.S. House of Representatives and the Senate. Pierce took part in the Mexican-American War and became a brigadier general in the Army...
  
   Highway (concurrency with NH 9)

Hillsborough

• Franklin Pierce Highway (concurrency with NH 9)
• Second New Hampshire Turnpike

Windsor

• Second New Hampshire Turnpike

Washington

• Main Street

Goshen

• Washington Road
• Mill Village Road