The map above shows Montana and Oklahoma side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Montana vs Oklahoma Geography
Land area
- Montana has a land area of 145,550 square miles (376,973 km²), while Oklahoma has 68,597 square miles (177,665 km²).
- Montana's land area is 2.1 times (112%) larger than Oklahoma's.
Total area
- Montana: 147,043 square miles (380,840 km²) vs Oklahoma: 69,899 square miles (181,038 km²), including inland and coastal water.
- Montana's total area is 2.1 times (110%) larger than Oklahoma's.
Length
- Montana is 319 miles (514 km) long from north to south; Oklahoma is 533 miles (857 km).
- Oklahoma's north-south length is 1.7 times (67%) longer than Montana's.
Width
- Montana spans 607 miles (976 km) east to west; Oklahoma spans 490 miles (789 km).
- Montana's east-west width is 1.2 times (24%) wider than Oklahoma's.
Highest point
- Montana's highest point is Granite Peak at 12,767 feet (3,891 m); Oklahoma's is Black Mesa at 4,980 feet (1,518 m).
- Granite Peak is 7,787 feet higher than Black Mesa.
Lowest point
- Montana's lowest point is Kootenai River at 1,805 feet; Oklahoma's is Little River at 289 feet.
- Oklahoma's lowest point is 1,516 feet lower.
Montana vs Oklahoma Population and History
Population
- Montana has a population of 1,137,233 (2024), while Oklahoma has 4,095,393 (2024).
- Oklahoma's population is 3.6 times (260%) larger than Montana's.
Population density
- Montana: 7.8 people per square mile vs Oklahoma: 59.7.
- Oklahoma's population density is 7.7 times (665%) higher than Montana's.
Biggest city
- Montana's biggest city is Billings with 121,483 people; Oklahoma's is Oklahoma City with 712,919.
- Oklahoma City's population is 5.9 times (487%) larger than Billings'.
Largest metro area
- Montana's largest metropolitan area is Billings, MT metro area (192,531 people) vs Oklahoma's Oklahoma City, OK metro area (1,497,821).
- Oklahoma City, OK metro area's population is 7.8 times (678%) larger than Billings, MT metro area's.
History
- Montana: Admitted to the Union on November 8, 1889, as the 41st state.
- Oklahoma: Admitted to the Union on November 16, 1907, as the 46th state.
- In its current form, Montana is the older of the two by 18 years.
Montana vs Oklahoma Economy
GDP
- Montana's GDP is $78.4 billion (2024) vs Oklahoma's $263.7 billion.
- Oklahoma's economic output is 3.4 times (236%) larger than Montana's.
GDP per capita
- Montana: $68,975 per person vs Oklahoma: $64,388.
- Montana's GDP per capita is 1.1 times (7%) higher than Oklahoma's.
Average income
- Montana: $69,240 vs Oklahoma: $63,708 average income per person (per capita personal income).
- Montana's average income is 1.1 times (9%) higher than Oklahoma's.
Montana vs Oklahoma Counties
Number of counties
- Montana has 56 counties, while Oklahoma has 77.
- Oklahoma's county count is 1.4 times (38%) higher than Montana's.
Biggest county by area
- Montana's largest county is Beaverhead County at 5,543 square miles; Oklahoma's is Osage County at 2,247 square miles.
- Beaverhead County's land area is 2.5 times (147%) larger than Osage County's.
Smallest county by area
- Montana: Silver Bow County (718 sq mi) vs Oklahoma: Marshall County (372 sq mi).
- Silver Bow County's land area is 1.9 times (93%) larger than Marshall County's.
Most populous county
- Montana: Yellowstone County (171,583 people) vs Oklahoma: Oklahoma County (816,490 people).
- Oklahoma County's population is 4.8 times (376%) larger than Yellowstone County's.
Least populous county
- Montana: Petroleum County (525 people) vs Oklahoma: Cimarron County (2,133 people).
- Cimarron County's population is 4.1 times (306%) larger than Petroleum County's.
Richest county
- Montana: Gallatin County ($94,573 per capita income) vs Oklahoma: Washington County ($126,749).
- Washington County's income is 1.3 times (34%) richer than Gallatin County's.
Poorest county
- Montana: Blaine County ($37,554 per capita income) vs Oklahoma: Atoka County ($38,709).
- Blaine County and Atoka County have about the same income.
Montana vs Oklahoma Taxes
State income tax
- Montana has a top income tax rate of 5.65%, while Oklahoma has a top income tax rate of 4.5%.
- Montana's top rate is 1.15 percentage points higher.
Property tax
- Montana: 0.69% effective rate vs Oklahoma: 0.75% of home value per year.
- Oklahoma's rate is 0.06 percentage points higher.
Sales tax
- Montana: 0% combined state and average local rate vs Oklahoma: 9.06%.
- Oklahoma's combined rate is 9.06 percentage points higher.
Official Websites
Montana official website · Oklahoma official website
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More Size Comparisons
All Montana 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.