The map above shows District of Columbia and Ohio side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
District of Columbia vs Ohio Geography
Land area
- District of Columbia has a land area of 61 square miles (158 km²), while Ohio has 40,859 square miles (105,824 km²).
- Ohio's land area is 669.8 times larger than District of Columbia's.
Total area
- District of Columbia: 68 square miles (177 km²) vs Ohio: 44,826 square miles (116,098 km²), including inland and coastal water.
- Ohio's total area is 655.9 times larger than District of Columbia's.
Length
- District of Columbia is 13 miles (22 km) long from north to south; Ohio is 291 miles (468 km).
- Ohio's north-south length is 22.4 times longer than District of Columbia's.
Width
- District of Columbia spans 12 miles (19 km) east to west; Ohio spans 317 miles (510 km).
- Ohio's east-west width is 26.4 times wider than District of Columbia's.
Highest point
- District of Columbia's highest point is Fort Reno at 429 feet (131 m); Ohio's is Campbell Hill at 1,547 feet (472 m).
- Campbell Hill is 1,118 feet higher than Fort Reno.
Lowest point
- District of Columbia's lowest point is Potomac River at 0 feet; Ohio's is Ohio River at 455 feet.
- District of Columbia's lowest point is 455 feet lower.
District of Columbia vs Ohio Population and History
Population
- District of Columbia has a population of 702,250 (2024), while Ohio has 11,883,304 (2024).
- Ohio's population is 16.9 times larger than District of Columbia's.
Population density
- District of Columbia: 11,493.5 people per square mile vs Ohio: 290.8.
- District of Columbia's population density is 39.5 times higher than Ohio's.
Biggest city
- District of Columbia's biggest city is Washington with 702,250 people; Ohio's is Columbus with 933,263.
- Columbus' population is 1.3 times (33%) larger than Washington's.
Largest metro area
- District of Columbia's largest metropolitan area is Washington-Arlington-Alexandria, DC-VA-MD-WV metro area (6,436,489 people) vs Ohio's Cincinnati, OH-KY-IN metro area (2,302,815).
- Washington-Arlington-Alexandria, DC-VA-MD-WV metro area's population is 2.8 times (180%) larger than Cincinnati, OH-KY-IN metro area's.
History
- District of Columbia: The federal district, established by the Residence Act on July 16, 1790; not a state.
- Ohio: Admitted to the Union on March 1, 1803, as the 17th state.
- In its current form, District of Columbia is the older of the two by 13 years.
District of Columbia vs Ohio Economy
GDP
- District of Columbia's GDP is $184.3 billion (2024) vs Ohio's $923.1 billion.
- Ohio's economic output is 5.0 times (401%) larger than District of Columbia's.
GDP per capita
- District of Columbia: $262,439 per person vs Ohio: $77,684.
- District of Columbia's GDP per capita is 3.4 times (238%) higher than Ohio's.
Average income
- District of Columbia: $111,185 vs Ohio: $64,464 average income per person (per capita personal income).
- District of Columbia's average income is 1.7 times (72%) higher than Ohio's.
District of Columbia vs Ohio Counties
Number of counties
- District of Columbia has 1 counties, while Ohio has 88.
- Ohio's county count is 88.0 times higher than District of Columbia's.
Biggest county by area
- District of Columbia's largest county is District of Columbia at 61 square miles; Ohio's is Ashtabula County at 702 square miles.
- Ashtabula County's land area is 11.5 times larger than District of Columbia's.
Smallest county by area
- District of Columbia: District of Columbia (61 sq mi) vs Ohio: Lake County (229 sq mi).
- Lake County's land area is 3.8 times (275%) larger than District of Columbia's.
Most populous county
- District of Columbia: District of Columbia (702,250 people) vs Ohio: Franklin County (1,356,303 people).
- Franklin County's population is 1.9 times (93%) larger than District of Columbia's.
Least populous county
- District of Columbia: District of Columbia (702,250 people) vs Ohio: Vinton County (12,545 people).
- District of Columbia's population is 56.0 times larger than Vinton County's.
Richest county
- District of Columbia: District of Columbia ($111,185 per capita income) vs Ohio: Delaware County ($96,573).
- District of Columbia's income is 1.2 times (15%) richer than Delaware County's.
Poorest county
- District of Columbia: District of Columbia ($111,185 per capita income) vs Ohio: Noble County ($34,940).
- District of Columbia's income is 3.2 times (218%) richer than Noble County's.
District of Columbia vs Ohio Taxes
State income tax
- District of Columbia has a top income tax rate of 10.75%, while Ohio has a top income tax rate of 2.75%.
- District of Columbia's top rate is 8 percentage points higher.
Property tax
- District of Columbia: 0.63% effective rate vs Ohio: 1.22% of home value per year.
- Ohio's rate is 0.59 percentage points higher.
Sales tax
- District of Columbia: 6% combined state and average local rate vs Ohio: 7.29%.
- Ohio's combined rate is 1.29 percentage points higher.
Official Websites
District of Columbia official website · Ohio official website
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More Size Comparisons
All District of Columbia 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.