The map above shows Mississippi and South Dakota side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Mississippi vs South Dakota Geography
Land area
- Mississippi has a land area of 46,925 square miles (121,534 km²), while South Dakota has 75,808 square miles (196,342 km²).
- South Dakota's land area is 1.6 times (62%) larger than Mississippi's.
Total area
- Mississippi: 48,436 square miles (125,448 km²) vs South Dakota: 77,116 square miles (199,729 km²), including inland and coastal water.
- South Dakota's total area is 1.6 times (59%) larger than Mississippi's.
Length
- Mississippi is 337 miles (542 km) long from north to south; South Dakota is 443 miles (712 km).
- South Dakota's north-south length is 1.3 times (31%) longer than Mississippi's.
Width
- Mississippi spans 340 miles (547 km) east to west; South Dakota spans 371 miles (597 km).
- South Dakota's east-west width is 1.1 times (9%) wider than Mississippi's.
Highest point
- Mississippi's highest point is Woodall Mountain at 805 feet (245 m); South Dakota's is Black Elk Peak at 7,198 feet (2,194 m).
- Black Elk Peak is 6,393 feet higher than Woodall Mountain.
Lowest point
- Mississippi's lowest point is Gulf of Mexico at 0 feet; South Dakota's is Big Stone Lake at 966 feet.
- Mississippi's lowest point is 966 feet lower.
Mississippi vs South Dakota Population and History
Population
- Mississippi has a population of 2,943,045 (2024), while South Dakota has 924,669 (2024).
- Mississippi's population is 3.2 times (218%) larger than South Dakota's.
Population density
- Mississippi: 62.7 people per square mile vs South Dakota: 12.2.
- Mississippi's population density is 5.1 times (414%) higher than South Dakota's.
Biggest city
- Mississippi's biggest city is Jackson with 141,449 people; South Dakota's is Sioux Falls with 209,289.
- Sioux Falls' population is 1.5 times (48%) larger than Jackson's.
Largest metro area
- Mississippi's largest metropolitan area is Memphis, TN-MS-AR metro area (1,339,345 people) vs South Dakota's Sioux Falls, SD-MN metro area (308,266).
- Memphis, TN-MS-AR metro area's population is 4.3 times (334%) larger than Sioux Falls, SD-MN metro area's.
History
- Mississippi: Admitted to the Union on December 10, 1817, as the 20th state.
- South Dakota: Admitted to the Union on November 2, 1889, as the 40th state.
- In its current form, Mississippi is the older of the two by 72 years.
Mississippi vs South Dakota Economy
GDP
- Mississippi's GDP is $158.2 billion (2024) vs South Dakota's $76.8 billion.
- Mississippi's economic output is 2.1 times (106%) larger than South Dakota's.
GDP per capita
- Mississippi: $53,751 per person vs South Dakota: $83,052.
- South Dakota's GDP per capita is 1.5 times (55%) higher than Mississippi's.
Average income
- Mississippi: $52,074 vs South Dakota: $75,699 average income per person (per capita personal income).
- South Dakota's average income is 1.5 times (45%) higher than Mississippi's.
Mississippi vs South Dakota Counties
Number of counties
- Mississippi has 82 counties, while South Dakota has 66.
- Mississippi's county count is 1.2 times (24%) higher than South Dakota's.
Biggest county by area
- Mississippi's largest county is Yazoo County at 922 square miles; South Dakota's is Meade County at 3,471 square miles.
- Meade County's land area is 3.8 times (276%) larger than Yazoo County's.
Smallest county by area
- Mississippi: Alcorn County (400 sq mi) vs South Dakota: Clay County (412 sq mi).
- Alcorn County and Clay County have about the same land area.
Most populous county
- Mississippi: Harrison County (213,730 people) vs South Dakota: Minnehaha County (208,639 people).
- Harrison County and Minnehaha County have about the same population.
Least populous county
- Mississippi: Issaquena County (1,295 people) vs South Dakota: Jones County (874 people).
- Issaquena County's population is 1.5 times (48%) larger than Jones County's.
Richest county
- Mississippi: Madison County ($90,668 per capita income) vs South Dakota: Union County ($146,712).
- Union County's income is 1.6 times (62%) richer than Madison County's.
Poorest county
- Mississippi: Issaquena County ($27,264 per capita income) vs South Dakota: Ziebach County ($32,778).
- Ziebach County's income is 1.2 times (20%) richer than Issaquena County's.
Mississippi vs South Dakota Taxes
State income tax
- Mississippi has a top income tax rate of 4%, while South Dakota has no state income tax.
- Mississippi's top rate is 4 percentage points higher.
Property tax
- Mississippi: 0.65% effective rate vs South Dakota: 1.02% of home value per year.
- South Dakota's rate is 0.37 percentage points higher.
Sales tax
- Mississippi: 7.06% combined state and average local rate vs South Dakota: 6.11%.
- Mississippi's combined rate is 0.95 percentage points higher.
Official Websites
Mississippi official website · South Dakota official website
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More Size Comparisons
All Mississippi size comparisons · All South Dakota 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.