The map above shows New Jersey and Ohio side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
New Jersey vs Ohio Geography
Land area: New Jersey has a land area of 7,355 square miles (19,049 km²), while Ohio has 40,859 square miles (105,824 km²). Ohio's land area is 5.6 times (456%) larger than New Jersey's.
Total area: New Jersey: 8,719 square miles (22,583 km²) vs Ohio: 44,826 square miles (116,098 km²), including inland and coastal water. Ohio's total area is 5.1 times (414%) larger than New Jersey's.
Length: New Jersey is 169 miles (271 km) long from north to south; Ohio is 291 miles (468 km). Ohio's north-south length is 1.7 times (72%) longer than New Jersey's.
Width: New Jersey spans 129 miles (207 km) east to west; Ohio spans 317 miles (510 km). Ohio's east-west width is 2.5 times (146%) wider than New Jersey's.
Highest point: New Jersey's highest point is High Point at 1,798 feet (548 m); Ohio's is Campbell Hill at 1,547 feet (472 m). High Point is 251 feet higher than Campbell Hill.
Lowest point: New Jersey's lowest point is Atlantic Ocean at 0 feet; Ohio's is Ohio River at 455 feet. New Jersey's lowest point is 455 feet lower.
New Jersey vs Ohio Population and History
Population: New Jersey has a population of 9,500,851 (2024), while Ohio has 11,883,304 (2024). Ohio's population is 1.3 times (25%) larger than New Jersey's.
Population density: New Jersey: 1,291.8 people per square mile vs Ohio: 290.8. New Jersey's population density is 4.4 times (344%) higher than Ohio's.
Biggest city: New Jersey's biggest city is Newark with 317,303 people; Ohio's is Columbus with 933,263. Columbus' population is 2.9 times (194%) larger than Newark's.
Largest metro area: New Jersey's largest metropolitan area is New York-Newark-Jersey City, NY-NJ metro area (19,940,274 people) vs Ohio's Cincinnati, OH-KY-IN metro area (2,302,815). New York-Newark-Jersey City, NY-NJ metro area's population is 8.7 times (766%) larger than Cincinnati, OH-KY-IN metro area's.
History: New Jersey: Admitted to the Union on December 18, 1787, as the 3rd state. Ohio: Admitted to the Union on March 1, 1803, as the 17th state. In its current form, New Jersey is the older of the two by 16 years.
New Jersey vs Ohio Economy
GDP: New Jersey's GDP is $846.0 billion (2024) vs Ohio's $923.1 billion. Ohio's economic output is 1.1 times (9%) larger than New Jersey's.
GDP per capita: New Jersey: $89,045 per person vs Ohio: $77,684. New Jersey's GDP per capita is 1.1 times (15%) higher than Ohio's.
Average income: New Jersey: $84,893 vs Ohio: $64,464 average income per person (per capita personal income). New Jersey's average income is 1.3 times (32%) higher than Ohio's.
New Jersey vs Ohio Counties
Number of counties: New Jersey has 21 counties, while Ohio has 88. Ohio's county count is 4.2 times (319%) higher than New Jersey's.
Biggest county by area: New Jersey's largest county is Burlington County at 799 square miles; Ohio's is Ashtabula County at 702 square miles. Burlington County's land area is 1.1 times (14%) larger than Ashtabula County's.
Smallest county by area: New Jersey: Hudson County (46 sq mi) vs Ohio: Lake County (229 sq mi). Lake County's land area is 5.0 times (397%) larger than Hudson County's.
Most populous county: New Jersey: Bergen County (978,641 people) vs Ohio: Franklin County (1,356,303 people). Franklin County's population is 1.4 times (39%) larger than Bergen County's.
Least populous county: New Jersey: Salem County (65,874 people) vs Ohio: Vinton County (12,545 people). Salem County's population is 5.3 times (425%) larger than Vinton County's.
Richest county: New Jersey: Somerset County ($121,042 per capita income) vs Ohio: Delaware County ($96,573). Somerset County's income is 1.3 times (25%) richer than Delaware County's.
Poorest county: New Jersey: Cumberland County ($50,843 per capita income) vs Ohio: Noble County ($34,940). Cumberland County's income is 1.5 times (46%) richer than Noble County's.
New Jersey vs Ohio Taxes
State income tax: New Jersey has a top income tax rate of 10.75%, while Ohio has a top income tax rate of 2.75%. New Jersey's top rate is 8 percentage points higher.
Property tax: New Jersey: 1.89% effective rate vs Ohio: 1.22% of home value per year. New Jersey's rate is 0.67 percentage points higher.
Sales tax: New Jersey: 6.6% combined state and average local rate vs Ohio: 7.29%. Ohio's combined rate is 0.69 percentage points higher.
Official Websites
New Jersey official website · Ohio official website
More Size Comparisons
All New Jersey size comparisons · All Ohio 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.