The map above shows New Hampshire and South Dakota side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
New Hampshire vs South Dakota Geography
Land area
- New Hampshire has a land area of 8,954 square miles (23,190 km²), while South Dakota has 75,808 square miles (196,342 km²).
- South Dakota's land area is 8.5 times (747%) larger than New Hampshire's.
Total area
- New Hampshire: 9,350 square miles (24,216 km²) vs South Dakota: 77,116 square miles (199,729 km²), including inland and coastal water.
- South Dakota's total area is 8.2 times (725%) larger than New Hampshire's.
Length
- New Hampshire is 180 miles (290 km) long from north to south; South Dakota is 443 miles (712 km).
- South Dakota's north-south length is 2.5 times (146%) longer than New Hampshire's.
Width
- New Hampshire spans 95 miles (152 km) east to west; South Dakota spans 371 miles (597 km).
- South Dakota's east-west width is 3.9 times (291%) wider than New Hampshire's.
Highest point
- New Hampshire's highest point is Mount Washington at 6,277 feet (1,913 m); South Dakota's is Black Elk Peak at 7,198 feet (2,194 m).
- Black Elk Peak is 921 feet higher than Mount Washington.
Lowest point
- New Hampshire's lowest point is Atlantic Ocean at 0 feet; South Dakota's is Big Stone Lake at 966 feet.
- New Hampshire's lowest point is 966 feet lower.
New Hampshire vs South Dakota Population and History
Population
- New Hampshire has a population of 1,409,032 (2024), while South Dakota has 924,669 (2024).
- New Hampshire's population is 1.5 times (52%) larger than South Dakota's.
Population density
- New Hampshire: 157.4 people per square mile vs South Dakota: 12.2.
- New Hampshire's population density is 12.9 times higher than South Dakota's.
Biggest city
- New Hampshire's biggest city is Manchester with 116,386 people; South Dakota's is Sioux Falls with 209,289.
- Sioux Falls' population is 1.8 times (80%) 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 South Dakota's Sioux Falls, SD-MN metro area (308,266).
- Boston-Cambridge-Newton, MA-NH metro area's population is 16.3 times larger than Sioux Falls, SD-MN metro area's.
History
- New Hampshire: Admitted to the Union on June 21, 1788, as the 9th state.
- South Dakota: Admitted to the Union on November 2, 1889, as the 40th state.
- In its current form, New Hampshire is the older of the two by 101 years.
New Hampshire vs South Dakota Economy
GDP
- New Hampshire's GDP is $119.3 billion (2024) vs South Dakota's $76.8 billion.
- New Hampshire's economic output is 1.6 times (55%) larger than South Dakota's.
GDP per capita
- New Hampshire: $84,694 per person vs South Dakota: $83,052.
- New Hampshire and South Dakota have about the same GDP per capita.
Average income
- New Hampshire: $83,192 vs South Dakota: $75,699 average income per person (per capita personal income).
- New Hampshire's average income is 1.1 times (10%) higher than South Dakota's.
New Hampshire vs South Dakota Counties
Number of counties
- New Hampshire has 10 counties, while South Dakota has 66.
- South Dakota's county count is 6.6 times (560%) higher than New Hampshire's.
Biggest county by area
- New Hampshire's largest county is Coos County at 1,795 square miles; South Dakota's is Meade County at 3,471 square miles.
- Meade County's land area is 1.9 times (93%) larger than Coos County's.
Smallest county by area
- New Hampshire: Strafford County (368 sq mi) vs South Dakota: Clay County (412 sq mi).
- Clay County's land area is 1.1 times (12%) larger than Strafford County's.
Most populous county
- New Hampshire: Hillsborough County (430,462 people) vs South Dakota: Minnehaha County (208,639 people).
- Hillsborough County's population is 2.1 times (106%) larger than Minnehaha County's.
Least populous county
- New Hampshire: Coos County (31,094 people) vs South Dakota: Jones County (874 people).
- Coos County's population is 35.6 times larger than Jones County's.
Richest county
- New Hampshire: Rockingham County ($100,216 per capita income) vs South Dakota: Union County ($146,712).
- Union County's income is 1.5 times (46%) richer than Rockingham County's.
Poorest county
- New Hampshire: Coos County ($60,657 per capita income) vs South Dakota: Ziebach County ($32,778).
- Coos County's income is 1.9 times (85%) richer than Ziebach County's.
New Hampshire vs South Dakota Taxes
State income tax
- New Hampshire has no state income tax, while South Dakota has no state income tax.
Property tax
- New Hampshire: 1.46% effective rate vs South Dakota: 1.02% of home value per year.
- New Hampshire's rate is 0.44 percentage points higher.
Sales tax
- New Hampshire: 0% combined state and average local rate vs South Dakota: 6.11%.
- South Dakota's combined rate is 6.11 percentage points higher.
Official Websites
New Hampshire official website · South Dakota official website
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More Size Comparisons
All New Hampshire size comparisons · All South Dakota 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.