The map above shows Oklahoma and Washington side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Oklahoma vs Washington Geography
Land area
- Oklahoma has a land area of 68,597 square miles (177,665 km²), while Washington has 66,455 square miles (172,119 km²).
- Oklahoma and Washington have about the same land area.
Total area
- Oklahoma: 69,899 square miles (181,038 km²) vs Washington: 71,301 square miles (184,668 km²), including inland and coastal water.
- Oklahoma and Washington have about the same total area.
Length
- Oklahoma is 533 miles (857 km) long from north to south; Washington is 238 miles (383 km).
- Oklahoma's north-south length is 2.2 times (124%) longer than Washington's.
Width
- Oklahoma spans 490 miles (789 km) east to west; Washington spans 399 miles (641 km).
- Oklahoma's east-west width is 1.2 times (23%) wider than Washington's.
Highest point
- Oklahoma's highest point is Black Mesa at 4,980 feet (1,518 m); Washington's is Mount Rainier at 14,409 feet (4,392 m).
- Mount Rainier is 9,429 feet higher than Black Mesa.
Lowest point
- Oklahoma's lowest point is Little River at 289 feet; Washington's is Pacific Ocean at 0 feet.
- Washington's lowest point is 289 feet lower.
Oklahoma vs Washington Population and History
Population
- Oklahoma has a population of 4,095,393 (2024), while Washington has 7,958,180 (2024).
- Washington's population is 1.9 times (94%) larger than Oklahoma's.
Population density
- Oklahoma: 59.7 people per square mile vs Washington: 119.8.
- Washington's population density is 2.0 times (101%) higher than Oklahoma's.
Biggest city
- Oklahoma's biggest city is Oklahoma City with 712,919 people; Washington's is Seattle with 780,995.
- Seattle's population is 1.1 times (10%) larger than Oklahoma City's.
Largest metro area
- Oklahoma's largest metropolitan area is Oklahoma City, OK metro area (1,497,821 people) vs Washington's Seattle-Tacoma-Bellevue, WA metro area (4,145,494).
- Seattle-Tacoma-Bellevue, WA metro area's population is 2.8 times (177%) larger than Oklahoma City, OK metro area's.
History
- Oklahoma: Admitted to the Union on November 16, 1907, as the 46th state.
- Washington: Admitted to the Union on November 11, 1889, as the 42nd state.
- In its current form, Washington is the older of the two by 18 years.
Oklahoma vs Washington Economy
GDP
- Oklahoma's GDP is $263.7 billion (2024) vs Washington's $856.0 billion.
- Washington's economic output is 3.2 times (225%) larger than Oklahoma's.
GDP per capita
- Oklahoma: $64,388 per person vs Washington: $107,564.
- Washington's GDP per capita is 1.7 times (67%) higher than Oklahoma's.
Average income
- Oklahoma: $63,708 vs Washington: $85,187 average income per person (per capita personal income).
- Washington's average income is 1.3 times (34%) higher than Oklahoma's.
Oklahoma vs Washington Counties
Number of counties
- Oklahoma has 77 counties, while Washington has 39.
- Oklahoma's county count is 2.0 times (97%) higher than Washington's.
Biggest county by area
- Oklahoma's largest county is Osage County at 2,247 square miles; Washington's is Okanogan County at 5,266 square miles.
- Okanogan County's land area is 2.3 times (134%) larger than Osage County's.
Smallest county by area
- Oklahoma: Marshall County (372 sq mi) vs Washington: San Juan County (174 sq mi).
- Marshall County's land area is 2.1 times (114%) larger than San Juan County's.
Most populous county
- Oklahoma: Oklahoma County (816,490 people) vs Washington: King County (2,340,211 people).
- King County's population is 2.9 times (187%) larger than Oklahoma County's.
Least populous county
- Oklahoma: Cimarron County (2,133 people) vs Washington: Garfield County (2,404 people).
- Garfield County's population is 1.1 times (13%) larger than Cimarron County's.
Richest county
- Oklahoma: Washington County ($126,749 per capita income) vs Washington: King County ($128,684).
- Washington County and King County have about the same income.
Poorest county
- Oklahoma: Atoka County ($38,709 per capita income) vs Washington: Ferry County ($50,456).
- Ferry County's income is 1.3 times (30%) richer than Atoka County's.
Oklahoma vs Washington Taxes
State income tax
- Oklahoma has a top income tax rate of 4.5%, while Washington has a 9% tax on capital gains only.
Property tax
- Oklahoma: 0.75% effective rate vs Washington: 0.79% of home value per year.
- Washington's rate is 0.04 percentage points higher.
Sales tax
- Oklahoma: 9.06% combined state and average local rate vs Washington: 9.57%.
- Washington's combined rate is 0.51 percentage points higher.
Official Websites
Oklahoma official website · Washington official website
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More Size Comparisons
All Oklahoma size comparisons · All Washington 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.