The map above shows Kansas and Oklahoma side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Kansas vs Oklahoma Geography
Land area
- Kansas has a land area of 81,759 square miles (211,754 km²), while Oklahoma has 68,597 square miles (177,665 km²).
- Kansas' land area is 1.2 times (19%) larger than Oklahoma's.
Total area
- Kansas: 82,278 square miles (213,100 km²) vs Oklahoma: 69,899 square miles (181,038 km²), including inland and coastal water.
- Kansas' total area is 1.2 times (18%) larger than Oklahoma's.
Length
- Kansas is 207 miles (334 km) long from north to south; Oklahoma is 533 miles (857 km).
- Oklahoma's north-south length is 2.6 times (157%) longer than Kansas'.
Width
- Kansas spans 401 miles (645 km) east to west; Oklahoma spans 490 miles (789 km).
- Oklahoma's east-west width is 1.2 times (22%) wider than Kansas'.
Highest point
- Kansas's highest point is Mount Sunflower at 4,040 feet (1,231 m); Oklahoma's is Black Mesa at 4,980 feet (1,518 m).
- Black Mesa is 940 feet higher than Mount Sunflower.
Lowest point
- Kansas's lowest point is Verdigris River at 679 feet; Oklahoma's is Little River at 289 feet.
- Oklahoma's lowest point is 390 feet lower.
Kansas vs Oklahoma Population and History
Population
- Kansas has a population of 2,970,606 (2024), while Oklahoma has 4,095,393 (2024).
- Oklahoma's population is 1.4 times (38%) larger than Kansas'.
Population density
- Kansas: 36.3 people per square mile vs Oklahoma: 59.7.
- Oklahoma's population density is 1.6 times (64%) higher than Kansas'.
Biggest city
- Kansas's biggest city is Wichita with 400,991 people; Oklahoma's is Oklahoma City with 712,919.
- Oklahoma City's population is 1.8 times (78%) larger than Wichita's.
Largest metro area
- Kansas's largest metropolitan area is Kansas City, MO-KS metro area (2,253,579 people) vs Oklahoma's Oklahoma City, OK metro area (1,497,821).
- Kansas City, MO-KS metro area's population is 1.5 times (50%) larger than Oklahoma City, OK metro area's.
History
- Kansas: Admitted to the Union on January 29, 1861, as the 34th state.
- Oklahoma: Admitted to the Union on November 16, 1907, as the 46th state.
- In its current form, Kansas is the older of the two by 46 years.
Kansas vs Oklahoma Economy
GDP
- Kansas's GDP is $230.5 billion (2024) vs Oklahoma's $263.7 billion.
- Oklahoma's economic output is 1.1 times (14%) larger than Kansas'.
GDP per capita
- Kansas: $77,601 per person vs Oklahoma: $64,388.
- Kansas' GDP per capita is 1.2 times (21%) higher than Oklahoma's.
Average income
- Kansas: $65,856 vs Oklahoma: $63,708 average income per person (per capita personal income).
- Kansas and Oklahoma have about the same average income.
Kansas vs Oklahoma Counties
Number of counties
- Kansas has 105 counties, while Oklahoma has 77.
- Kansas' county count is 1.4 times (36%) higher than Oklahoma's.
Biggest county by area
- Kansas's largest county is Butler County at 1,430 square miles; Oklahoma's is Osage County at 2,247 square miles.
- Osage County's land area is 1.6 times (57%) larger than Butler County's.
Smallest county by area
- Kansas: Wyandotte County (152 sq mi) vs Oklahoma: Marshall County (372 sq mi).
- Marshall County's land area is 2.5 times (145%) larger than Wyandotte County's.
Most populous county
- Kansas: Johnson County (632,276 people) vs Oklahoma: Oklahoma County (816,490 people).
- Oklahoma County's population is 1.3 times (29%) larger than Johnson County's.
Least populous county
- Kansas: Greeley County (1,152 people) vs Oklahoma: Cimarron County (2,133 people).
- Cimarron County's population is 1.9 times (85%) larger than Greeley County's.
Richest county
- Kansas: Greeley County ($134,780 per capita income) vs Oklahoma: Washington County ($126,749).
- Greeley County's income is 1.1 times (6%) richer than Washington County's.
Poorest county
- Kansas: Wyandotte County ($42,878 per capita income) vs Oklahoma: Atoka County ($38,709).
- Wyandotte County's income is 1.1 times (11%) richer than Atoka County's.
Kansas vs Oklahoma Taxes
State income tax
- Kansas has a top income tax rate of 5.58%, while Oklahoma has a top income tax rate of 4.5%.
- Kansas's top rate is 1.08 percentage points higher.
Property tax
- Kansas: 1.25% effective rate vs Oklahoma: 0.75% of home value per year.
- Kansas's rate is 0.5 percentage points higher.
Sales tax
- Kansas: 8.71% combined state and average local rate vs Oklahoma: 9.06%.
- Oklahoma's combined rate is 0.35 percentage points higher.
Official Websites
Kansas official website · Oklahoma official website
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More Size Comparisons
All Kansas 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.