The map above shows Idaho and Oklahoma side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Idaho vs Oklahoma Geography
Land area
- Idaho has a land area of 82,645 square miles (214,051 km²), while Oklahoma has 68,597 square miles (177,665 km²).
- Idaho's land area is 1.2 times (20%) larger than Oklahoma's.
Total area
- Idaho: 83,569 square miles (216,441 km²) vs Oklahoma: 69,899 square miles (181,038 km²), including inland and coastal water.
- Idaho's total area is 1.2 times (20%) larger than Oklahoma's.
Length
- Idaho is 483 miles (778 km) long from north to south; Oklahoma is 533 miles (857 km).
- Oklahoma's north-south length is 1.1 times (10%) longer than Idaho's.
Width
- Idaho spans 352 miles (566 km) east to west; Oklahoma spans 490 miles (789 km).
- Oklahoma's east-west width is 1.4 times (39%) wider than Idaho's.
Highest point
- Idaho's highest point is Borah Peak at 12,631 feet (3,850 m); Oklahoma's is Black Mesa at 4,980 feet (1,518 m).
- Borah Peak is 7,651 feet higher than Black Mesa.
Lowest point
- Idaho's lowest point is Snake River at 718 feet; Oklahoma's is Little River at 289 feet.
- Oklahoma's lowest point is 429 feet lower.
Idaho vs Oklahoma Population and History
Population
- Idaho has a population of 2,001,619 (2024), while Oklahoma has 4,095,393 (2024).
- Oklahoma's population is 2.0 times (105%) larger than Idaho's.
Population density
- Idaho: 24.2 people per square mile vs Oklahoma: 59.7.
- Oklahoma's population density is 2.5 times (147%) higher than Idaho's.
Biggest city
- Idaho's biggest city is Boise with 237,963 people; Oklahoma's is Oklahoma City with 712,919.
- Oklahoma City's population is 3.0 times (200%) larger than Boise's.
Largest metro area
- Idaho's largest metropolitan area is Boise City, ID metro area (845,877 people) vs Oklahoma's Oklahoma City, OK metro area (1,497,821).
- Oklahoma City, OK metro area's population is 1.8 times (77%) larger than Boise City, ID metro area's.
History
- Idaho: Admitted to the Union on July 3, 1890, as the 43rd state.
- Oklahoma: Admitted to the Union on November 16, 1907, as the 46th state.
- In its current form, Idaho is the older of the two by 17 years.
Idaho vs Oklahoma Economy
GDP
- Idaho's GDP is $129.0 billion (2024) vs Oklahoma's $263.7 billion.
- Oklahoma's economic output is 2.0 times (104%) larger than Idaho's.
GDP per capita
- Idaho: $64,457 per person vs Oklahoma: $64,388.
- Idaho and Oklahoma have about the same GDP per capita.
Average income
- Idaho: $62,323 vs Oklahoma: $63,708 average income per person (per capita personal income).
- Idaho and Oklahoma have about the same average income.
Idaho vs Oklahoma Counties
Number of counties
- Idaho has 44 counties, while Oklahoma has 77.
- Oklahoma's county count is 1.8 times (75%) higher than Idaho's.
Biggest county by area
- Idaho's largest county is Idaho County at 8,478 square miles; Oklahoma's is Osage County at 2,247 square miles.
- Idaho County's land area is 3.8 times (277%) larger than Osage County's.
Smallest county by area
- Idaho: Payette County (407 sq mi) vs Oklahoma: Marshall County (372 sq mi).
- Payette County's land area is 1.1 times (10%) larger than Marshall County's.
Most populous county
- Idaho: Ada County (535,799 people) vs Oklahoma: Oklahoma County (816,490 people).
- Oklahoma County's population is 1.5 times (52%) larger than Ada County's.
Least populous county
- Idaho: Clark County (794 people) vs Oklahoma: Cimarron County (2,133 people).
- Cimarron County's population is 2.7 times (169%) larger than Clark County's.
Richest county
- Idaho: Blaine County ($202,612 per capita income) vs Oklahoma: Washington County ($126,749).
- Blaine County's income is 1.6 times (60%) richer than Washington County's.
Poorest county
- Idaho: Madison County ($29,485 per capita income) vs Oklahoma: Atoka County ($38,709).
- Atoka County's income is 1.3 times (31%) richer than Madison County's.
Idaho vs Oklahoma Taxes
State income tax
- Idaho has a top income tax rate of 5.3%, while Oklahoma has a top income tax rate of 4.5%.
- Idaho's top rate is 0.8 percentage points higher.
Property tax
- Idaho: 0.43% effective rate vs Oklahoma: 0.75% of home value per year.
- Oklahoma's rate is 0.32 percentage points higher.
Sales tax
- Idaho: 6.03% combined state and average local rate vs Oklahoma: 9.06%.
- Oklahoma's combined rate is 3.03 percentage points higher.
Official Websites
Idaho official website · Oklahoma official website
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More Size Comparisons
All Idaho 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.