Question: The Circumferential Highway goes through the town in what New Hampshire county?
Context: Isaac Parsons (January 27, 1752 – August 25, 1796) was an American planter, politician, and militia officer in the U.S. state of Virginia (now West Virginia).  Parsons served as a member of the Virginia House of Delegates representing Hampshire County from 1789 until his death in 1796.  Following an act of the Virginia General Assembly in 1789, Parsons was appointed to serve as a trustee for the town of Romney.  In 1790, Parsons began serving as a justice for Hampshire County.  He served as a captain in command of a company in the Virginia militia during the American Revolutionary War and continued to serve as a captain in the Hampshire County militia following the war.  Parsons operated a public ferry across the South Branch Potomac River, and later died from drowning in the river in 1796.  Parsons was the grandfather of Isaac Parsons (1814–1862), who also represented Hampshire County in the Virginia House of Delegates and served as an officer in the Confederate States Army. State Route 262 (SR 262) is a primary state highway in the U.S. state of Virginia.  Known as Woodrow Wilson Parkway or the Staunton Beltway, the state highway runs 13.70 mi from Interstate 64 and I-81 near Jolivue west, north, and east in a clockwise loop to SR 254 east of Staunton.  SR 262 is a three-quarter circumferential highway around Staunton and adjacent portions of Augusta County.  The highway contains two- and four-lane freeway and controlled-access segments and interchanges with several major highways, including U.S. Route 11 (US 11), SR 252, and SR 254 south of Staunton, US 250 on the west side of the city, and I-81 east of Staunton. Maryland Route 170 (MD 170) is a state highway in the U.S. state of Maryland.  The state highway runs 12.98 mi from MD 175 in Odenton north to MD 2 in Brooklyn Park.  MD 170 connects the western Anne Arundel County communities of Odenton and Severn and the North County communities of Linthicum, Pumphrey, and Brooklyn Park with Baltimore/Washington International Thurgood Marshall Airport (BWI Airport).  The highway connects BWI Airport with Interstate 695 (I-695) and MD 100 and forms part of the Airport Loop, a circumferential highway that connects the airport and I-195 with many airport-related services. The Circumferential Highway is the commonly accepted name for a bypass route around the city of Nashua in southern New Hampshire, the majority of which has not yet been built.  The purpose of the highway is to provide an alternate route for commuters to access the F.E. Everett Turnpike and U.S. Route 3 in Nashua.  Most of the highway will be built in Hudson, with small sections also built through the towns of Litchfield and Merrimack as well as the city of Nashua. State Route 120 (SR 120) is a primary state highway in the U.S. state of Virginia.  Known as Glebe Road, the state highway runs 9.10 mi from U.S. Route 1 (US 1) in Crystal City north to SR 123 at the Chain Bridge.  SR 120 is a partial circumferential highway in Arlington County that connects the southeastern and northwestern corners of the county with several urban villages along its crescent-shaped path, including Ballston.  The state highway also connects all of the major highways that radiate from Washington, including Interstate 395, I-66, US 50, and US 29.  SR 120 is a part of the National Highway System for its entire length. Litchfield is a town in Hillsborough County, New Hampshire, United States.  The population was 8,271 at the 2010 census. State Route 150 (SR 150) is a state highway in the U.S. state of Virginia.  Known as Chippenham Parkway, the state highway runs 15.19 mi from Interstate 95 (I-95) and SR 895 in Bensley north to Parham Road and River Road near Tuckahoe in Henrico County.  SR 150 is a four- to six-lane circumferential highway that connects the Chesterfield County suburbs of Richmond with western Henrico County and, via SR 895, eastern Henrico County and Richmond International Airport.  The highway is a freeway except for a short stretch east of SR 147 in Richmond.  SR 150 has junctions with all of the radial highways south of the James River, including I-95, U.S. Route 1, US 301, US 360, US 60, and SR 76. Parham Road is a circumferential highway in Henrico County in the U.S. state of Virginia.  The highway runs 12.08 mi from Virginia State Route 150 (SR 150) near Tuckahoe east to U.S. Route 301 (US 301) and SR 2 in Chamberlayne.  Parham Road serves the northwestern suburbs of Richmond, including Tuckahoe, Laurel, and Chamberlayne.  The four-lane divided highway intersects all of the major highways that extend northwest and north from the city, including Interstate 64 (I-64) and I-95.  Parham Road is county maintained except for the portion that is State Route 73, a connector between US 1 and I-95.  The Parham Road name was applied to a small portion of the current route by the early 20th century.  SR 73 was constructed in the early 1960s.  Most of Parham Road from SR 6 to US 1 was constructed as new four-lane divided highway by Henrico County in the late 1960s; the existing sections were upgraded at the same time.  The highway was extended east to its present terminus in the late 1970s.  Parham Road was completed south to its present western terminus in 1990 concurrent with the extension of SR 150 across the James River from the Southside of Richmond to Henrico County. State Route 123 (SR 123) is a primary state highway in the U.S. state of Virginia.  The state highway runs 29.27 mi from U.S. Route 1 (US 1) in Woodbridge north to the Chain Bridge across the Potomac River into Washington from Arlington.  It goes by three local names.  From its southern terminus to the Occoquan River Bridge, it is known as Gordon Boulevard.  From the Occoquan River Bridge to the city of Fairfax it is known as Ox Road.  North from Fairfax, it is known as Chain Bridge Road.  SR 123 is a partial circumferential highway in Northern Virginia that connects Woodbridge in eastern Prince William County with the independent city of Fairfax and the Fairfax County communities of Vienna, Tysons Corner, and McLean, the last the home of the National Counterterrorism Center and the Central Intelligence Agency.  The state highway also connects all of the major highways that radiate from Washington, including Interstate 95, I-66, US 29, US 50, SR 267, and the George Washington Memorial Parkway.  Furthermore, SR 123 crosses another pair of circumferential highways, I-495 and the Fairfax County Parkway, and SR 7, a major northwest–southeast highway through Northern Virginia.  The state highway is a part of the National Highway System for its entire length. Hampden County is a non-governmental county located in the Pioneer Valley of the state of Massachusetts, in the United States.  As of the 2010 census, Hampden County's population was 463,490.  Its traditional county seat is Springfield, the Connecticut River Valley's largest city, and economic and cultural capital.  Hampden County was split from Hampshire County in 1812, because Northampton, Massachusetts, was made Hampshire County's "shire town" in 1794; however, Springfield—theretofore Hampshire County's traditional shire town, dating back to its founding in 1636—grew at a pace far quicker than Northampton and was granted shire town-status over its own, southerly jurisdiction.  It was named for John Hampden.  To the north of Hampden County is modern-day Hampshire County; to the west is Berkshire County; to the east is Worcester County; to the south are Litchfield County, Hartford County, and Tolland County in Connecticut.
Answer: Hillsborough