The map above shows Arizona and Ohio side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Arizona vs Ohio Geography
Land area: Arizona has a land area of 113,655 square miles (294,366 km²), while Ohio has 40,859 square miles (105,824 km²). Arizona's land area is 2.8 times (178%) larger than Ohio's.
Total area: Arizona: 113,985 square miles (295,220 km²) vs Ohio: 44,826 square miles (116,098 km²), including inland and coastal water. Arizona's total area is 2.5 times (154%) larger than Ohio's.
Length: Arizona is 429 miles (690 km) long from north to south; Ohio is 291 miles (468 km). Arizona's north-south length is 1.5 times (47%) longer than Ohio's.
Width: Arizona spans 452 miles (727 km) east to west; Ohio spans 317 miles (510 km). Arizona's east-west width is 1.4 times (43%) wider than Ohio's.
Highest point: Arizona's highest point is Humphreys Peak at 12,620 feet (3,847 m); Ohio's is Campbell Hill at 1,547 feet (472 m). Humphreys Peak is 11,073 feet higher than Campbell Hill.
Lowest point: Arizona's lowest point is Colorado River at 71 feet; Ohio's is Ohio River at 455 feet. Arizona's lowest point is 384 feet lower.
Arizona vs Ohio Population and History
Population: Arizona has a population of 7,582,384 (2024), while Ohio has 11,883,304 (2024). Ohio's population is 1.6 times (57%) larger than Arizona's.
Population density: Arizona: 66.7 people per square mile vs Ohio: 290.8. Ohio's population density is 4.4 times (336%) higher than Arizona's.
Biggest city: Arizona's biggest city is Phoenix with 1,673,164 people; Ohio's is Columbus with 933,263. Phoenix's population is 1.8 times (79%) larger than Columbus'.
Largest metro area: Arizona's largest metropolitan area is Phoenix-Mesa-Chandler, AZ metro area (5,186,958 people) vs Ohio's Cincinnati, OH-KY-IN metro area (2,302,815). Phoenix-Mesa-Chandler, AZ metro area's population is 2.3 times (125%) larger than Cincinnati, OH-KY-IN metro area's.
History: Arizona: Admitted to the Union on February 14, 1912, as the 48th 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 109 years.
Arizona vs Ohio Economy
GDP: Arizona's GDP is $570.1 billion (2024) vs Ohio's $923.1 billion. Ohio's economic output is 1.6 times (62%) larger than Arizona's.
GDP per capita: Arizona: $75,186 per person vs Ohio: $77,684. Arizona and Ohio have about the same GDP per capita.
Average income: Arizona: $65,798 vs Ohio: $64,464 average income per person (per capita personal income). Arizona and Ohio have about the same average income.
Arizona vs Ohio Counties
Number of counties: Arizona has 15 counties, while Ohio has 88. Ohio's county count is 5.9 times (487%) higher than Arizona's.
Biggest county by area: Arizona's largest county is Coconino County at 18,616 square miles; Ohio's is Ashtabula County at 702 square miles. Coconino County's land area is 26.5 times larger than Ashtabula County's.
Smallest county by area: Arizona: Santa Cruz County (1,236 sq mi) vs Ohio: Lake County (229 sq mi). Santa Cruz County's land area is 5.4 times (439%) larger than Lake County's.
Most populous county: Arizona: Maricopa County (4,673,096 people) vs Ohio: Franklin County (1,356,303 people). Maricopa County's population is 3.4 times (245%) larger than Franklin County's.
Least populous county: Arizona: Greenlee County (9,410 people) vs Ohio: Vinton County (12,545 people). Vinton County's population is 1.3 times (33%) larger than Greenlee County's.
Richest county: Arizona: Maricopa County ($72,176 per capita income) vs Ohio: Delaware County ($96,573). Delaware County's income is 1.3 times (34%) richer than Maricopa County's.
Poorest county: Arizona: Graham County ($44,164 per capita income) vs Ohio: Noble County ($34,940). Graham County's income is 1.3 times (26%) richer than Noble County's.
Arizona vs Ohio Taxes
State income tax: Arizona has a top income tax rate of 2.5%, while Ohio has a top income tax rate of 2.75%. Ohio's top rate is 0.25 percentage points higher.
Property tax: Arizona: 0.43% effective rate vs Ohio: 1.22% of home value per year. Ohio's rate is 0.79 percentage points higher.
Sales tax: Arizona: 8.54% combined state and average local rate vs Ohio: 7.29%. Arizona's combined rate is 1.25 percentage points higher.
Official Websites
Arizona official website · Ohio official website
More Size Comparisons
All Arizona 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.