The map above shows Mississippi and Oklahoma side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Mississippi vs Oklahoma Geography
Land area: Mississippi has a land area of 46,925 square miles (121,534 km²), while Oklahoma has 68,597 square miles (177,665 km²). Oklahoma's land area is 1.5 times (46%) larger than Mississippi's.
Total area: Mississippi: 48,436 square miles (125,448 km²) vs Oklahoma: 69,899 square miles (181,038 km²), including inland and coastal water. Oklahoma's total area is 1.4 times (44%) larger than Mississippi's.
Length: Mississippi is 337 miles (542 km) long from north to south; Oklahoma is 533 miles (857 km). Oklahoma's north-south length is 1.6 times (58%) longer than Mississippi's.
Width: Mississippi spans 340 miles (547 km) east to west; Oklahoma spans 490 miles (789 km). Oklahoma's east-west width is 1.4 times (44%) wider than Mississippi's.
Highest point: Mississippi's highest point is Woodall Mountain at 805 feet (245 m); Oklahoma's is Black Mesa at 4,980 feet (1,518 m). Black Mesa is 4,175 feet higher than Woodall Mountain.
Lowest point: Mississippi's lowest point is Gulf of Mexico at 0 feet; Oklahoma's is Little River at 289 feet. Mississippi's lowest point is 289 feet lower.
Mississippi vs Oklahoma Population and History
Population: Mississippi has a population of 2,943,045 (2024), while Oklahoma has 4,095,393 (2024). Oklahoma's population is 1.4 times (39%) larger than Mississippi's.
Population density: Mississippi: 62.7 people per square mile vs Oklahoma: 59.7. Mississippi's population density is 1.1 times (5%) higher than Oklahoma's.
Biggest city: Mississippi's biggest city is Jackson with 141,449 people; Oklahoma's is Oklahoma City with 712,919. Oklahoma City's population is 5.0 times (404%) larger than Jackson's.
Largest metro area: Mississippi's largest metropolitan area is Memphis, TN-MS-AR metro area (1,339,345 people) vs Oklahoma's Oklahoma City, OK metro area (1,497,821). Oklahoma City, OK metro area's population is 1.1 times (12%) larger than Memphis, TN-MS-AR metro area's.
History: Mississippi: Admitted to the Union on December 10, 1817, as the 20th state. Oklahoma: Admitted to the Union on November 16, 1907, as the 46th state. In its current form, Mississippi is the older of the two by 90 years.
Mississippi vs Oklahoma Economy
GDP: Mississippi's GDP is $158.2 billion (2024) vs Oklahoma's $263.7 billion. Oklahoma's economic output is 1.7 times (67%) larger than Mississippi's.
GDP per capita: Mississippi: $53,751 per person vs Oklahoma: $64,388. Oklahoma's GDP per capita is 1.2 times (20%) higher than Mississippi's.
Average income: Mississippi: $52,074 vs Oklahoma: $63,708 average income per person (per capita personal income). Oklahoma's average income is 1.2 times (22%) higher than Mississippi's.
Mississippi vs Oklahoma Counties
Number of counties: Mississippi has 82 counties, while Oklahoma has 77. Mississippi's county count is 1.1 times (6%) higher than Oklahoma's.
Biggest county by area: Mississippi's largest county is Yazoo County at 922 square miles; Oklahoma's is Osage County at 2,247 square miles. Osage County's land area is 2.4 times (144%) larger than Yazoo County's.
Smallest county by area: Mississippi: Alcorn County (400 sq mi) vs Oklahoma: Marshall County (372 sq mi). Alcorn County's land area is 1.1 times (8%) larger than Marshall County's.
Most populous county: Mississippi: Harrison County (213,730 people) vs Oklahoma: Oklahoma County (816,490 people). Oklahoma County's population is 3.8 times (282%) larger than Harrison County's.
Least populous county: Mississippi: Issaquena County (1,295 people) vs Oklahoma: Cimarron County (2,133 people). Cimarron County's population is 1.6 times (65%) larger than Issaquena County's.
Richest county: Mississippi: Madison County ($90,668 per capita income) vs Oklahoma: Washington County ($126,749). Washington County's income is 1.4 times (40%) richer than Madison County's.
Poorest county: Mississippi: Issaquena County ($27,264 per capita income) vs Oklahoma: Atoka County ($38,709). Atoka County's income is 1.4 times (42%) richer than Issaquena County's.
Mississippi vs Oklahoma Taxes
State income tax: Mississippi has a top income tax rate of 4%, while Oklahoma has a top income tax rate of 4.5%. Oklahoma's top rate is 0.5 percentage points higher.
Property tax: Mississippi: 0.65% effective rate vs Oklahoma: 0.75% of home value per year. Oklahoma's rate is 0.1 percentage points higher.
Sales tax: Mississippi: 7.06% combined state and average local rate vs Oklahoma: 9.06%. Oklahoma's combined rate is 2 percentage points higher.
Official Websites
Mississippi official website · Oklahoma official website
More Size Comparisons
All Mississippi 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.