The map above shows District of Columbia and Oklahoma side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
District of Columbia vs Oklahoma Geography
Land area
- District of Columbia has a land area of 61 square miles (158 km²), while Oklahoma has 68,597 square miles (177,665 km²).
- Oklahoma's land area is 1,124.5 times larger than District of Columbia's.
Total area
- District of Columbia: 68 square miles (177 km²) vs Oklahoma: 69,899 square miles (181,038 km²), including inland and coastal water.
- Oklahoma's total area is 1,022.8 times larger than District of Columbia's.
Length
- District of Columbia is 13 miles (22 km) long from north to south; Oklahoma is 533 miles (857 km).
- Oklahoma's north-south length is 41.0 times longer than District of Columbia's.
Width
- District of Columbia spans 12 miles (19 km) east to west; Oklahoma spans 490 miles (789 km).
- Oklahoma's east-west width is 40.8 times wider than District of Columbia's.
Highest point
- District of Columbia's highest point is Fort Reno at 429 feet (131 m); Oklahoma's is Black Mesa at 4,980 feet (1,518 m).
- Black Mesa is 4,551 feet higher than Fort Reno.
Lowest point
- District of Columbia's lowest point is Potomac River at 0 feet; Oklahoma's is Little River at 289 feet.
- District of Columbia's lowest point is 289 feet lower.
District of Columbia vs Oklahoma Population and History
Population
- District of Columbia has a population of 702,250 (2024), while Oklahoma has 4,095,393 (2024).
- Oklahoma's population is 5.8 times (483%) larger than District of Columbia's.
Population density
- District of Columbia: 11,493.5 people per square mile vs Oklahoma: 59.7.
- District of Columbia's population density is 192.5 times higher than Oklahoma's.
Biggest city
- District of Columbia's biggest city is Washington with 702,250 people; Oklahoma's is Oklahoma City with 712,919.
- Washington and Oklahoma City have about the same population.
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 Oklahoma's Oklahoma City, OK metro area (1,497,821).
- Washington-Arlington-Alexandria, DC-VA-MD-WV metro area's population is 4.3 times (330%) larger than Oklahoma City, OK metro area's.
History
- District of Columbia: The federal district, established by the Residence Act on July 16, 1790; not a state.
- Oklahoma: Admitted to the Union on November 16, 1907, as the 46th state.
- In its current form, District of Columbia is the older of the two by 117 years.
District of Columbia vs Oklahoma Economy
GDP
- District of Columbia's GDP is $184.3 billion (2024) vs Oklahoma's $263.7 billion.
- Oklahoma's economic output is 1.4 times (43%) larger than District of Columbia's.
GDP per capita
- District of Columbia: $262,439 per person vs Oklahoma: $64,388.
- District of Columbia's GDP per capita is 4.1 times (308%) higher than Oklahoma's.
Average income
- District of Columbia: $111,185 vs Oklahoma: $63,708 average income per person (per capita personal income).
- District of Columbia's average income is 1.7 times (75%) higher than Oklahoma's.
District of Columbia vs Oklahoma Counties
Number of counties
- District of Columbia has 1 counties, while Oklahoma has 77.
- Oklahoma's county count is 77.0 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; Oklahoma's is Osage County at 2,247 square miles.
- Osage County's land area is 36.8 times larger than District of Columbia's.
Smallest county by area
- District of Columbia: District of Columbia (61 sq mi) vs Oklahoma: Marshall County (372 sq mi).
- Marshall County's land area is 6.1 times (508%) larger than District of Columbia's.
Most populous county
- District of Columbia: District of Columbia (702,250 people) vs Oklahoma: Oklahoma County (816,490 people).
- Oklahoma County's population is 1.2 times (16%) larger than District of Columbia's.
Least populous county
- District of Columbia: District of Columbia (702,250 people) vs Oklahoma: Cimarron County (2,133 people).
- District of Columbia's population is 329.2 times larger than Cimarron County's.
Richest county
- District of Columbia: District of Columbia ($111,185 per capita income) vs Oklahoma: Washington County ($126,749).
- Washington County's income is 1.1 times (14%) richer than District of Columbia's.
Poorest county
- District of Columbia: District of Columbia ($111,185 per capita income) vs Oklahoma: Atoka County ($38,709).
- District of Columbia's income is 2.9 times (187%) richer than Atoka County's.
District of Columbia vs Oklahoma Taxes
State income tax
- District of Columbia has a top income tax rate of 10.75%, while Oklahoma has a top income tax rate of 4.5%.
- District of Columbia's top rate is 6.25 percentage points higher.
Property tax
- District of Columbia: 0.63% effective rate vs Oklahoma: 0.75% of home value per year.
- Oklahoma's rate is 0.12 percentage points higher.
Sales tax
- District of Columbia: 6% combined state and average local rate vs Oklahoma: 9.06%.
- Oklahoma's combined rate is 3.06 percentage points higher.
Official Websites
District of Columbia official website · Oklahoma official website
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More Size Comparisons
All District of Columbia size comparisons · All Oklahoma 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.