The map above shows District of Columbia and New Hampshire side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
District of Columbia vs New Hampshire Geography
Land area: District of Columbia has a land area of 61 square miles (158 km²), while New Hampshire has 8,954 square miles (23,190 km²). New Hampshire's land area is 146.8 times larger than District of Columbia's.
Total area: District of Columbia: 68 square miles (177 km²) vs New Hampshire: 9,350 square miles (24,216 km²), including inland and coastal water. New Hampshire's total area is 136.8 times larger than District of Columbia's.
Length: District of Columbia is 13 miles (22 km) long from north to south; New Hampshire is 180 miles (290 km). New Hampshire's north-south length is 13.8 times longer than District of Columbia's.
Width: District of Columbia spans 12 miles (19 km) east to west; New Hampshire spans 95 miles (152 km). New Hampshire's east-west width is 7.9 times (692%) wider than District of Columbia's.
Highest point: District of Columbia's highest point is Fort Reno at 429 feet (131 m); New Hampshire's is Mount Washington at 6,277 feet (1,913 m). Mount Washington is 5,848 feet higher than Fort Reno.
Lowest point: District of Columbia's lowest point is Potomac River at 0 feet; New Hampshire's is Atlantic Ocean at 0 feet. Both lowest points are at or near sea level.
District of Columbia vs New Hampshire Population and History
Population: District of Columbia has a population of 702,250 (2024), while New Hampshire has 1,409,032 (2024). New Hampshire's population is 2.0 times (101%) larger than District of Columbia's.
Population density: District of Columbia: 11,493.5 people per square mile vs New Hampshire: 157.4. District of Columbia's population density is 73.0 times higher than New Hampshire's.
Biggest city: District of Columbia's biggest city is Washington with 702,250 people; New Hampshire's is Manchester with 116,386. Washington's population is 6.0 times (503%) larger than Manchester's.
Largest metro area: District of Columbia's largest metropolitan area is Washington-Arlington-Alexandria, DC-VA-MD-WV metro area (6,436,489 people) vs New Hampshire's Boston-Cambridge-Newton, MA-NH metro area (5,025,517). Washington-Arlington-Alexandria, DC-VA-MD-WV metro area's population is 1.3 times (28%) larger than Boston-Cambridge-Newton, MA-NH metro area's.
History: District of Columbia: The federal district, established by the Residence Act on July 16, 1790; not a state. New Hampshire: Admitted to the Union on June 21, 1788, as the 9th state. In its current form, New Hampshire is the older of the two by 2 years.
District of Columbia vs New Hampshire Economy
GDP: District of Columbia's GDP is $184.3 billion (2024) vs New Hampshire's $119.3 billion. District of Columbia's economic output is 1.5 times (54%) larger than New Hampshire's.
GDP per capita: District of Columbia: $262,439 per person vs New Hampshire: $84,694. District of Columbia's GDP per capita is 3.1 times (210%) higher than New Hampshire's.
Average income: District of Columbia: $111,185 vs New Hampshire: $83,192 average income per person (per capita personal income). District of Columbia's average income is 1.3 times (34%) higher than New Hampshire's.
District of Columbia vs New Hampshire Counties
Number of counties: District of Columbia has 1 counties, while New Hampshire has 10. New Hampshire's county count is 10.0 times higher than District of Columbia's.
Biggest county by area: District of Columbia's largest county is District of Columbia at 61 square miles; New Hampshire's is Coos County at 1,795 square miles. Coos County's land area is 29.4 times larger than District of Columbia's.
Smallest county by area: District of Columbia: District of Columbia (61 sq mi) vs New Hampshire: Strafford County (368 sq mi). Strafford County's land area is 6.0 times (501%) larger than District of Columbia's.
Most populous county: District of Columbia: District of Columbia (702,250 people) vs New Hampshire: Hillsborough County (430,462 people). District of Columbia's population is 1.6 times (63%) larger than Hillsborough County's.
Least populous county: District of Columbia: District of Columbia (702,250 people) vs New Hampshire: Coos County (31,094 people). District of Columbia's population is 22.6 times larger than Coos County's.
Richest county: District of Columbia: District of Columbia ($111,185 per capita income) vs New Hampshire: Rockingham County ($100,216). District of Columbia's income is 1.1 times (11%) richer than Rockingham County's.
Poorest county: District of Columbia: District of Columbia ($111,185 per capita income) vs New Hampshire: Coos County ($60,657). District of Columbia's income is 1.8 times (83%) richer than Coos County's.
District of Columbia vs New Hampshire Taxes
State income tax: District of Columbia has a top income tax rate of 10.75%, while New Hampshire has no state income tax. District of Columbia's top rate is 10.75 percentage points higher.
Property tax: District of Columbia: 0.63% effective rate vs New Hampshire: 1.46% of home value per year. New Hampshire's rate is 0.83 percentage points higher.
Sales tax: District of Columbia: 6% combined state and average local rate vs New Hampshire: 0%. District of Columbia's combined rate is 6 percentage points higher.
Official Websites
District of Columbia official website · New Hampshire official website
More Size Comparisons
All District of Columbia size comparisons · All New Hampshire 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.