The map above shows Arkansas and Ohio side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Arkansas vs Ohio Geography
Land area: Arkansas has a land area of 51,992 square miles (134,658 km²), while Ohio has 40,859 square miles (105,824 km²). Arkansas' land area is 1.3 times (27%) larger than Ohio's.
Total area: Arkansas: 53,198 square miles (137,781 km²) vs Ohio: 44,826 square miles (116,098 km²), including inland and coastal water. Arkansas' total area is 1.2 times (19%) larger than Ohio's.
Length: Arkansas is 243 miles (392 km) long from north to south; Ohio is 291 miles (468 km). Ohio's north-south length is 1.2 times (20%) longer than Arkansas'.
Width: Arkansas spans 279 miles (449 km) east to west; Ohio spans 317 miles (510 km). Ohio's east-west width is 1.1 times (14%) wider than Arkansas'.
Highest point: Arkansas's highest point is Mount Magazine at 2,752 feet (839 m); Ohio's is Campbell Hill at 1,547 feet (472 m). Mount Magazine is 1,205 feet higher than Campbell Hill.
Lowest point: Arkansas's lowest point is Ouachita River at 55 feet; Ohio's is Ohio River at 455 feet. Arkansas's lowest point is 400 feet lower.
Arkansas vs Ohio Population and History
Population: Arkansas has a population of 3,088,354 (2024), while Ohio has 11,883,304 (2024). Ohio's population is 3.8 times (285%) larger than Arkansas'.
Population density: Arkansas: 59.4 people per square mile vs Ohio: 290.8. Ohio's population density is 4.9 times (390%) higher than Arkansas'.
Biggest city: Arkansas's biggest city is Little Rock with 204,774 people; Ohio's is Columbus with 933,263. Columbus' population is 4.6 times (356%) larger than Little Rock's.
Largest metro area: Arkansas's largest metropolitan area is Memphis, TN-MS-AR metro area (1,339,345 people) vs Ohio's Cincinnati, OH-KY-IN metro area (2,302,815). Cincinnati, OH-KY-IN metro area's population is 1.7 times (72%) larger than Memphis, TN-MS-AR metro area's.
History: Arkansas: Admitted to the Union on June 15, 1836, as the 25th state. Ohio: Admitted to the Union on March 1, 1803, as the 17th state. In its current form, Ohio is the older of the two by 33 years.
Arkansas vs Ohio Economy
GDP: Arkansas's GDP is $188.3 billion (2024) vs Ohio's $923.1 billion. Ohio's economic output is 4.9 times (390%) larger than Arkansas'.
GDP per capita: Arkansas: $60,984 per person vs Ohio: $77,684. Ohio's GDP per capita is 1.3 times (27%) higher than Arkansas'.
Average income: Arkansas: $59,320 vs Ohio: $64,464 average income per person (per capita personal income). Ohio's average income is 1.1 times (9%) higher than Arkansas'.
Arkansas vs Ohio Counties
Number of counties: Arkansas has 75 counties, while Ohio has 88. Ohio's county count is 1.2 times (17%) higher than Arkansas'.
Biggest county by area: Arkansas's largest county is Union County at 1,039 square miles; Ohio's is Ashtabula County at 702 square miles. Union County's land area is 1.5 times (48%) larger than Ashtabula County's.
Smallest county by area: Arkansas: Lafayette County (530 sq mi) vs Ohio: Lake County (229 sq mi). Lafayette County's land area is 2.3 times (131%) larger than Lake County's.
Most populous county: Arkansas: Pulaski County (401,209 people) vs Ohio: Franklin County (1,356,303 people). Franklin County's population is 3.4 times (238%) larger than Pulaski County's.
Least populous county: Arkansas: Calhoun County (4,690 people) vs Ohio: Vinton County (12,545 people). Vinton County's population is 2.7 times (167%) larger than Calhoun County's.
Richest county: Arkansas: Benton County ($120,594 per capita income) vs Ohio: Delaware County ($96,573). Benton County's income is 1.2 times (25%) richer than Delaware County's.
Poorest county: Arkansas: Lincoln County ($36,032 per capita income) vs Ohio: Noble County ($34,940). Lincoln County and Noble County have about the same income.
Arkansas vs Ohio Taxes
State income tax: Arkansas has a top income tax rate of 3.9%, while Ohio has a top income tax rate of 2.75%. Arkansas's top rate is 1.15 percentage points higher.
Property tax: Arkansas: 0.52% effective rate vs Ohio: 1.22% of home value per year. Ohio's rate is 0.7 percentage points higher.
Sales tax: Arkansas: 9.48% combined state and average local rate vs Ohio: 7.29%. Arkansas's combined rate is 2.19 percentage points higher.
Official Websites
Arkansas official website · Ohio official website
More Size Comparisons
All Arkansas 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.