The map above shows Connecticut and Ohio side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Connecticut vs Ohio Geography
Land area: Connecticut has a land area of 4,843 square miles (12,542 km²), while Ohio has 40,859 square miles (105,824 km²). Ohio's land area is 8.4 times (744%) larger than Connecticut's.
Total area: Connecticut: 5,544 square miles (14,358 km²) vs Ohio: 44,826 square miles (116,098 km²), including inland and coastal water. Ohio's total area is 8.1 times (709%) larger than Connecticut's.
Length: Connecticut is 73 miles (118 km) long from north to south; Ohio is 291 miles (468 km). Ohio's north-south length is 4.0 times (299%) longer than Connecticut's.
Width: Connecticut spans 104 miles (167 km) east to west; Ohio spans 317 miles (510 km). Ohio's east-west width is 3.0 times (205%) wider than Connecticut's.
Highest point: Connecticut's highest point is Mount Frissell (south slope) at 2,376 feet (724 m); Ohio's is Campbell Hill at 1,547 feet (472 m). Mount Frissell (south slope) is 829 feet higher than Campbell Hill.
Lowest point: Connecticut's lowest point is Long Island Sound at 0 feet; Ohio's is Ohio River at 455 feet. Connecticut's lowest point is 455 feet lower.
Connecticut vs Ohio Population and History
Population: Connecticut has a population of 3,675,069 (2024), while Ohio has 11,883,304 (2024). Ohio's population is 3.2 times (223%) larger than Connecticut's.
Population density: Connecticut: 758.9 people per square mile vs Ohio: 290.8. Connecticut's population density is 2.6 times (161%) higher than Ohio's.
Biggest city: Connecticut's biggest city is Bridgeport with 151,599 people; Ohio's is Columbus with 933,263. Columbus' population is 6.2 times (516%) larger than Bridgeport's.
Largest metro area: Connecticut's largest metropolitan area is Hartford-West Hartford-East Hartford, CT metro area (1,169,048 people) vs Ohio's Cincinnati, OH-KY-IN metro area (2,302,815). Cincinnati, OH-KY-IN metro area's population is 2.0 times (97%) larger than Hartford-West Hartford-East Hartford, CT metro area's.
History: Connecticut: Admitted to the Union on January 9, 1788, as the 5th state. Ohio: Admitted to the Union on March 1, 1803, as the 17th state. In its current form, Connecticut is the older of the two by 15 years.
Connecticut vs Ohio Economy
GDP: Connecticut's GDP is $356.8 billion (2024) vs Ohio's $923.1 billion. Ohio's economic output is 2.6 times (159%) larger than Connecticut's.
GDP per capita: Connecticut: $97,096 per person vs Ohio: $77,684. Connecticut's GDP per capita is 1.2 times (25%) higher than Ohio's.
Average income: Connecticut: $95,067 vs Ohio: $64,464 average income per person (per capita personal income). Connecticut's average income is 1.5 times (47%) higher than Ohio's.
Connecticut vs Ohio Counties
Number of counties: Connecticut has 9 counties, while Ohio has 88. Ohio's county count is 9.8 times (878%) higher than Connecticut's.
Biggest county by area: Connecticut's largest county is Capitol Planning Region at 1,027 square miles; Ohio's is Ashtabula County at 702 square miles. Capitol Planning Region's land area is 1.5 times (46%) larger than Ashtabula County's.
Smallest county by area: Connecticut: Greater Bridgeport Planning Region (140 sq mi) vs Ohio: Lake County (229 sq mi). Lake County's land area is 1.6 times (64%) larger than Greater Bridgeport Planning Region's.
Most populous county: Connecticut: Capitol Planning Region (991,508 people) vs Ohio: Franklin County (1,356,303 people). Franklin County's population is 1.4 times (37%) larger than Capitol Planning Region's.
Least populous county: Connecticut: Northeastern Connecticut Planning Region (97,701 people) vs Ohio: Vinton County (12,545 people). Northeastern Connecticut Planning Region's population is 7.8 times (679%) larger than Vinton County's.
Richest county: Connecticut: Western Connecticut Planning Region ($165,513 per capita income) vs Ohio: Delaware County ($96,573). Western Connecticut Planning Region's income is 1.7 times (71%) richer than Delaware County's.
Poorest county: Connecticut: Southeastern Connecticut Planning Region ($64,845 per capita income) vs Ohio: Noble County ($34,940). Southeastern Connecticut Planning Region's income is 1.9 times (86%) richer than Noble County's.
Connecticut vs Ohio Taxes
State income tax: Connecticut has a top income tax rate of 6.99%, while Ohio has a top income tax rate of 2.75%. Connecticut's top rate is 4.24 percentage points higher.
Property tax: Connecticut: 1.66% effective rate vs Ohio: 1.22% of home value per year. Connecticut's rate is 0.44 percentage points higher.
Sales tax: Connecticut: 6.35% combined state and average local rate vs Ohio: 7.29%. Ohio's combined rate is 0.94 percentage points higher.
Official Websites
Connecticut official website · Ohio official website
More Size Comparisons
All Connecticut 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.