The map above shows Iowa and New Hampshire side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Iowa vs New Hampshire Geography
Land area: Iowa has a land area of 55,854 square miles (144,660 km²), while New Hampshire has 8,954 square miles (23,190 km²). Iowa's land area is 6.2 times (524%) larger than New Hampshire's.
Total area: Iowa: 56,273 square miles (145,746 km²) vs New Hampshire: 9,350 square miles (24,216 km²), including inland and coastal water. Iowa's total area is 6.0 times (502%) larger than New Hampshire's.
Length: Iowa is 216 miles (347 km) long from north to south; New Hampshire is 180 miles (290 km). Iowa's north-south length is 1.2 times (20%) longer than New Hampshire's.
Width: Iowa spans 335 miles (539 km) east to west; New Hampshire spans 95 miles (152 km). Iowa's east-west width is 3.5 times (253%) wider than New Hampshire's.
Highest point: Iowa's highest point is Hawkeye Point at 1,669 feet (509 m); New Hampshire's is Mount Washington at 6,277 feet (1,913 m). Mount Washington is 4,608 feet higher than Hawkeye Point.
Lowest point: Iowa's lowest point is Mississippi River at 480 feet; New Hampshire's is Atlantic Ocean at 0 feet. New Hampshire's lowest point is 480 feet lower.
Iowa vs New Hampshire Population and History
Population: Iowa has a population of 3,241,488 (2024), while New Hampshire has 1,409,032 (2024). Iowa's population is 2.3 times (130%) larger than New Hampshire's.
Population density: Iowa: 58.0 people per square mile vs New Hampshire: 157.4. New Hampshire's population density is 2.7 times (171%) higher than Iowa's.
Biggest city: Iowa's biggest city is Des Moines with 213,096 people; New Hampshire's is Manchester with 116,386. Des Moines' population is 1.8 times (83%) larger than Manchester's.
Largest metro area: Iowa's largest metropolitan area is Omaha, NE-IA metro area (1,001,010 people) vs New Hampshire's Boston-Cambridge-Newton, MA-NH metro area (5,025,517). Boston-Cambridge-Newton, MA-NH metro area's population is 5.0 times (402%) larger than Omaha, NE-IA metro area's.
History: Iowa: Admitted to the Union on December 28, 1846, as the 29th 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 58 years.
Iowa vs New Hampshire Economy
GDP: Iowa's GDP is $265.8 billion (2024) vs New Hampshire's $119.3 billion. Iowa's economic output is 2.2 times (123%) larger than New Hampshire's.
GDP per capita: Iowa: $81,998 per person vs New Hampshire: $84,694. Iowa and New Hampshire have about the same GDP per capita.
Average income: Iowa: $65,225 vs New Hampshire: $83,192 average income per person (per capita personal income). New Hampshire's average income is 1.3 times (28%) higher than Iowa's.
Iowa vs New Hampshire Counties
Number of counties: Iowa has 99 counties, while New Hampshire has 10. Iowa's county count is 9.9 times (890%) higher than New Hampshire's.
Biggest county by area: Iowa's largest county is Kossuth County at 973 square miles; New Hampshire's is Coos County at 1,795 square miles. Coos County's land area is 1.8 times (84%) larger than Kossuth County's.
Smallest county by area: Iowa: Dickinson County (381 sq mi) vs New Hampshire: Strafford County (368 sq mi). Dickinson County and Strafford County have about the same land area.
Most populous county: Iowa: Polk County (516,185 people) vs New Hampshire: Hillsborough County (430,462 people). Polk County's population is 1.2 times (20%) larger than Hillsborough County's.
Least populous county: Iowa: Adams County (3,606 people) vs New Hampshire: Coos County (31,094 people). Coos County's population is 8.6 times (762%) larger than Adams County's.
Richest county: Iowa: Mitchell County ($98,211 per capita income) vs New Hampshire: Rockingham County ($100,216). Mitchell County and Rockingham County have about the same income.
Poorest county: Iowa: Decatur County ($46,134 per capita income) vs New Hampshire: Coos County ($60,657). Coos County's income is 1.3 times (31%) richer than Decatur County's.
Iowa vs New Hampshire Taxes
State income tax: Iowa has a top income tax rate of 3.8%, while New Hampshire has no state income tax. Iowa's top rate is 3.8 percentage points higher.
Property tax: Iowa: 1.29% effective rate vs New Hampshire: 1.46% of home value per year. New Hampshire's rate is 0.17 percentage points higher.
Sales tax: Iowa: 6.94% combined state and average local rate vs New Hampshire: 0%. Iowa's combined rate is 6.94 percentage points higher.
Official Websites
Iowa official website · New Hampshire official website
More Size Comparisons
All Iowa 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.