New Hampshire

Hillsborough

422,937
2020 population
1790
first census record
24
census records

About Hillsborough

Hillsborough, New Hampshire, first appears in the United States federal census in 1790, when it recorded a population of 32,871. At the most recent census, in 2020, its population stood at 422,937.

The county's recorded population has risen across the decades to its highest level in 2020.

On the ground today, 111 places are listed on the National Register of Historic Places.

Population by decade

Census YearPopulationChart
2020422,937
2010400,721
2000380,841
1990336,073
1980276,608
1970223,941
1960178,161
1950156,987
1940144,888
1930140,165
1920135,512
1910126,072
1900112,640
189093,247
188075,634
187064,238
186062,140
185057,478
184042,494
183037,724
182053,884
181049,249
180043,899
179032,871
Source

Population data from the United States decennial census, U.S. Census Bureau (public domain).

Historic places in Hillsborough

National Register of Historic Places listings in Hillsborough, New Hampshire.

Bedford Town Hall
Bedford
Hunt Memorial Library
Nashua
Kennedy Hill Farm
Goffstown
Goffstown High School
Goffstown
Citizens' Hall
Lyndeborough
St. George's School and Convent
Manchester
Goffstown Public Library
Goffstown
New England Glassworks Site
Temple
New Ipswich Town Hall
New Ipswich
Sainte Marie Roman Catholic Church Parish Historic District
Manchester
Hoyt Shoe Factory
Manchester
Hill-Lassonde House
Manchester
Weare Town House
Weare
Hillsborough County Courthouse
Nashua
Stark, Gen. John, House
Manchester
Woodbury, Levi, Homestead
Francetown
Brick Schoolhouse
Sharon
Birchwood Inn
Temple
Old Post Office Block
Manchester
McClure-Hilton House
Merrimack
Straw, William Parker, House
Manchester
Goffstown Covered Railroad Bridge
Goffstown
Contoocook Mills Industrial District
Hillsborough
Barnes, Jonathan, House
Hillsborough Center
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Other counties in New Hampshire

Explore census history and historic records for more New Hampshire counties.

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Everything a full report reveals about Hillsborough County, New Hampshire

This page charts the census history of Hillsborough County, New Hampshire. A full Aubrey report for an address here pulls together everything the historical record holds about the ground, from the earliest settlement to the twentieth century:

Overview
An interactive map of the location with historic sites, battles and Native heritage plotted, and its full story era by era.
The Land
The historic sites and place names around the location, and how this land was settled and used.
Geology
The bedrock beneath the site, its age and rock type, reaching back millions of years.
LiDAR Terrain
Laser-scanned terrain that reveals earthworks and old features hidden in the landscape.
Conflict & War
The battles, raids and skirmishes fought near here, across every era of American conflict.
The Civil War
The Civil War on this ground, 1861 to 1865: who held it, and the battles, camps and regiments nearby.
The Soldiers
The men who marched from here in the Civil War, named and traced where the record allows.
Native Heritage
The Native nations who held this land, mapped across time from before European contact to today.
Settlement
Who claimed and held this ground, from Indigenous homelands through the colonial powers to the United States.
The Community
How the town grew, who came, and what kind of place it became, traced through the census record.
Rivers & Rail
The rivers, canals and railroads that connected this place between 1830 and 1911.
Notable People
The people born, buried or genuinely tied to this exact place, with their stories.
Historical Maps
Historic maps of the location layered over how it looks today.
Finds & Access
Museum objects tied to the area, and the laws on searching, collecting and access here.
Literature
The old books, county histories and archives that mention this place, quoted with their sources.
Spotlight
A deep dive into the most remarkable, lesser-known history of the place, traced back to the record.
Points of Interest
The most significant historic sites and landmarks near the location, and why they matter.
Timeline
The whole story of the location told era by era, from first peoples to the present day.
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Frequently asked about Hillsborough

When does Hillsborough first appear in the US census?
Hillsborough, New Hampshire first appears in the federal census in 1790, with a recorded population of 32,871.
What is the population of Hillsborough?
At the most recent federal census (2020), Hillsborough had a recorded population of 422,937.
How many historic places are in Hillsborough?
111 sites are listed on the National Register of Historic Places in Hillsborough, New Hampshire.
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