The map above shows New Hampshire and New Jersey side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
New Hampshire vs New Jersey Geography
Land area: New Hampshire has a land area of 8,954 square miles (23,190 km²), while New Jersey has 7,355 square miles (19,049 km²). New Hampshire's land area is 1.2 times (22%) larger than New Jersey's.
Total area: New Hampshire: 9,350 square miles (24,216 km²) vs New Jersey: 8,719 square miles (22,583 km²), including inland and coastal water. New Hampshire's total area is 1.1 times (7%) larger than New Jersey's.
Length: New Hampshire is 180 miles (290 km) long from north to south; New Jersey is 169 miles (271 km). New Hampshire's north-south length is 1.1 times (7%) longer than New Jersey's.
Width: New Hampshire spans 95 miles (152 km) east to west; New Jersey spans 129 miles (207 km). New Jersey's east-west width is 1.4 times (36%) wider than New Hampshire's.
Highest point: New Hampshire's highest point is Mount Washington at 6,277 feet (1,913 m); New Jersey's is High Point at 1,798 feet (548 m). Mount Washington is 4,479 feet higher than High Point.
Lowest point: New Hampshire's lowest point is Atlantic Ocean at 0 feet; New Jersey's is Atlantic Ocean at 0 feet. Both lowest points are at or near sea level.
New Hampshire vs New Jersey Population and History
Population: New Hampshire has a population of 1,409,032 (2024), while New Jersey has 9,500,851 (2024). New Jersey's population is 6.7 times (574%) larger than New Hampshire's.
Population density: New Hampshire: 157.4 people per square mile vs New Jersey: 1,291.8. New Jersey's population density is 8.2 times (721%) higher than New Hampshire's.
Biggest city: New Hampshire's biggest city is Manchester with 116,386 people; New Jersey's is Newark with 317,303. Newark's population is 2.7 times (173%) larger than Manchester's.
Largest metro area: New Hampshire's largest metropolitan area is Boston-Cambridge-Newton, MA-NH metro area (5,025,517 people) vs New Jersey's New York-Newark-Jersey City, NY-NJ metro area (19,940,274). New York-Newark-Jersey City, NY-NJ metro area's population is 4.0 times (297%) larger than Boston-Cambridge-Newton, MA-NH metro area's.
History: New Hampshire: Admitted to the Union on June 21, 1788, as the 9th state. New Jersey: Admitted to the Union on December 18, 1787, as the 3rd state. In its current form, New Jersey is the older of the two by 1 years.
New Hampshire vs New Jersey Economy
GDP: New Hampshire's GDP is $119.3 billion (2024) vs New Jersey's $846.0 billion. New Jersey's economic output is 7.1 times (609%) larger than New Hampshire's.
GDP per capita: New Hampshire: $84,694 per person vs New Jersey: $89,045. New Jersey's GDP per capita is 1.1 times (5%) higher than New Hampshire's.
Average income: New Hampshire: $83,192 vs New Jersey: $84,893 average income per person (per capita personal income). New Hampshire and New Jersey have about the same average income.
New Hampshire vs New Jersey Counties
Number of counties: New Hampshire has 10 counties, while New Jersey has 21. New Jersey's county count is 2.1 times (110%) higher than New Hampshire's.
Biggest county by area: New Hampshire's largest county is Coos County at 1,795 square miles; New Jersey's is Burlington County at 799 square miles. Coos County's land area is 2.2 times (125%) larger than Burlington County's.
Smallest county by area: New Hampshire: Strafford County (368 sq mi) vs New Jersey: Hudson County (46 sq mi). Strafford County's land area is 8.0 times (695%) larger than Hudson County's.
Most populous county: New Hampshire: Hillsborough County (430,462 people) vs New Jersey: Bergen County (978,641 people). Bergen County's population is 2.3 times (127%) larger than Hillsborough County's.
Least populous county: New Hampshire: Coos County (31,094 people) vs New Jersey: Salem County (65,874 people). Salem County's population is 2.1 times (112%) larger than Coos County's.
Richest county: New Hampshire: Rockingham County ($100,216 per capita income) vs New Jersey: Somerset County ($121,042). Somerset County's income is 1.2 times (21%) richer than Rockingham County's.
Poorest county: New Hampshire: Coos County ($60,657 per capita income) vs New Jersey: Cumberland County ($50,843). Coos County's income is 1.2 times (19%) richer than Cumberland County's.
New Hampshire vs New Jersey Taxes
State income tax: New Hampshire has no state income tax, while New Jersey has a top income tax rate of 10.75%. New Jersey's top rate is 10.75 percentage points higher.
Property tax: New Hampshire: 1.46% effective rate vs New Jersey: 1.89% of home value per year. New Jersey's rate is 0.43 percentage points higher.
Sales tax: New Hampshire: 0% combined state and average local rate vs New Jersey: 6.6%. New Jersey's combined rate is 6.6 percentage points higher.
Official Websites
New Hampshire official website · New Jersey official website
More Size Comparisons
All New Hampshire size comparisons · All New Jersey size comparisons
Area, elevation and boundary figures come from official national statistics and US Census Bureau and Natural Earth boundary data; US state population, economic, county and tax figures come from the US Census Bureau, the Bureau of Economic Analysis and the Tax Foundation. Figures are rounded and for general reference.