The map above shows Indiana and Oklahoma side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Indiana vs Oklahoma Geography
Land area
- Indiana has a land area of 35,825 square miles (92,787 km²), while Oklahoma has 68,597 square miles (177,665 km²).
- Oklahoma's land area is 1.9 times (91%) larger than Indiana's.
Total area
- Indiana: 36,421 square miles (94,331 km²) vs Oklahoma: 69,899 square miles (181,038 km²), including inland and coastal water.
- Oklahoma's total area is 1.9 times (92%) larger than Indiana's.
Length
- Indiana is 276 miles (444 km) long from north to south; Oklahoma is 533 miles (857 km).
- Oklahoma's north-south length is 1.9 times (93%) longer than Indiana's.
Width
- Indiana spans 193 miles (310 km) east to west; Oklahoma spans 490 miles (789 km).
- Oklahoma's east-west width is 2.5 times (154%) wider than Indiana's.
Highest point
- Indiana's highest point is Hoosier Hill at 1,255 feet (383 m); Oklahoma's is Black Mesa at 4,980 feet (1,518 m).
- Black Mesa is 3,725 feet higher than Hoosier Hill.
Lowest point
- Indiana's lowest point is Ohio River at 330 feet; Oklahoma's is Little River at 289 feet.
- Oklahoma's lowest point is 41 feet lower.
Indiana vs Oklahoma Population and History
Population
- Indiana has a population of 6,924,275 (2024), while Oklahoma has 4,095,393 (2024).
- Indiana's population is 1.7 times (69%) larger than Oklahoma's.
Population density
- Indiana: 193.3 people per square mile vs Oklahoma: 59.7.
- Indiana's population density is 3.2 times (224%) higher than Oklahoma's.
Biggest city
- Indiana's biggest city is Indianapolis with 891,484 people; Oklahoma's is Oklahoma City with 712,919.
- Indianapolis' population is 1.3 times (25%) larger than Oklahoma City's.
Largest metro area
- Indiana's largest metropolitan area is Chicago-Naperville-Elgin, IL-IN metro area (9,408,576 people) vs Oklahoma's Oklahoma City, OK metro area (1,497,821).
- Chicago-Naperville-Elgin, IL-IN metro area's population is 6.3 times (528%) larger than Oklahoma City, OK metro area's.
History
- Indiana: Admitted to the Union on December 11, 1816, as the 19th state.
- Oklahoma: Admitted to the Union on November 16, 1907, as the 46th state.
- In its current form, Indiana is the older of the two by 91 years.
Indiana vs Oklahoma Economy
GDP
- Indiana's GDP is $519.5 billion (2024) vs Oklahoma's $263.7 billion.
- Indiana's economic output is 2.0 times (97%) larger than Oklahoma's.
GDP per capita
- Indiana: $75,028 per person vs Oklahoma: $64,388.
- Indiana's GDP per capita is 1.2 times (17%) higher than Oklahoma's.
Average income
- Indiana: $64,077 vs Oklahoma: $63,708 average income per person (per capita personal income).
- Indiana and Oklahoma have about the same average income.
Indiana vs Oklahoma Counties
Number of counties
- Indiana has 92 counties, while Oklahoma has 77.
- Indiana's county count is 1.2 times (19%) higher than Oklahoma's.
Biggest county by area
- Indiana's largest county is Allen County at 657 square miles; Oklahoma's is Osage County at 2,247 square miles.
- Osage County's land area is 3.4 times (242%) larger than Allen County's.
Smallest county by area
- Indiana: Ohio County (86 sq mi) vs Oklahoma: Marshall County (372 sq mi).
- Marshall County's land area is 4.3 times (331%) larger than Ohio County's.
Most populous county
- Indiana: Marion County (981,628 people) vs Oklahoma: Oklahoma County (816,490 people).
- Marion County's population is 1.2 times (20%) larger than Oklahoma County's.
Least populous county
- Indiana: Ohio County (5,996 people) vs Oklahoma: Cimarron County (2,133 people).
- Ohio County's population is 2.8 times (181%) larger than Cimarron County's.
Richest county
- Indiana: Hamilton County ($104,283 per capita income) vs Oklahoma: Washington County ($126,749).
- Washington County's income is 1.2 times (22%) richer than Hamilton County's.
Poorest county
- Indiana: Miami County ($44,940 per capita income) vs Oklahoma: Atoka County ($38,709).
- Miami County's income is 1.2 times (16%) richer than Atoka County's.
Indiana vs Oklahoma Taxes
State income tax
- Indiana has a top income tax rate of 2.95%, while Oklahoma has a top income tax rate of 4.5%.
- Oklahoma's top rate is 1.55 percentage points higher.
Property tax
- Indiana: 0.74% effective rate vs Oklahoma: 0.75% of home value per year.
- The two are essentially equal.
Sales tax
- Indiana: 7% combined state and average local rate vs Oklahoma: 9.06%.
- Oklahoma's combined rate is 2.06 percentage points higher.
Official Websites
Indiana official website · Oklahoma official website
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More Size Comparisons
All Indiana 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.