The map above shows South Dakota and Texas side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
South Dakota vs Texas Geography
Land area
- South Dakota has a land area of 75,808 square miles (196,342 km²), while Texas has 261,259 square miles (676,657 km²).
- Texas' land area is 3.4 times (245%) larger than South Dakota's.
Total area
- South Dakota: 77,116 square miles (199,729 km²) vs Texas: 268,599 square miles (695,668 km²), including inland and coastal water.
- Texas' total area is 3.5 times (248%) larger than South Dakota's.
Length
- South Dakota is 443 miles (712 km) long from north to south; Texas is 808 miles (1,300 km).
- Texas' north-south length is 1.8 times (82%) longer than South Dakota's.
Width
- South Dakota spans 371 miles (597 km) east to west; Texas spans 777 miles (1,250 km).
- Texas' east-west width is 2.1 times (109%) wider than South Dakota's.
Highest point
- South Dakota's highest point is Black Elk Peak at 7,198 feet (2,194 m); Texas's is Guadalupe Peak at 8,730 feet (2,661 m).
- Guadalupe Peak is 1,532 feet higher than Black Elk Peak.
Lowest point
- South Dakota's lowest point is Big Stone Lake at 966 feet; Texas's is Gulf of Mexico at 0 feet.
- Texas's lowest point is 966 feet lower.
South Dakota vs Texas Population and History
Population
- South Dakota has a population of 924,669 (2024), while Texas has 31,290,831 (2024).
- Texas' population is 33.8 times larger than South Dakota's.
Population density
- South Dakota: 12.2 people per square mile vs Texas: 119.8.
- Texas' population density is 9.8 times (882%) higher than South Dakota's.
Biggest city
- South Dakota's biggest city is Sioux Falls with 209,289 people; Texas's is Houston with 2,390,125.
- Houston's population is 11.4 times larger than Sioux Falls'.
Largest metro area
- South Dakota's largest metropolitan area is Sioux Falls, SD-MN metro area (308,266 people) vs Texas's Dallas-Fort Worth-Arlington, TX metro area (8,344,032).
- Dallas-Fort Worth-Arlington, TX metro area's population is 27.1 times larger than Sioux Falls, SD-MN metro area's.
History
- South Dakota: Admitted to the Union on November 2, 1889, as the 40th state.
- Texas: Admitted to the Union on December 29, 1845, as the 28th state.
- In its current form, Texas is the older of the two by 44 years.
South Dakota vs Texas Economy
GDP
- South Dakota's GDP is $76.8 billion (2024) vs Texas's $2,769.8 billion.
- Texas' economic output is 36.1 times larger than South Dakota's.
GDP per capita
- South Dakota: $83,052 per person vs Texas: $88,517.
- Texas' GDP per capita is 1.1 times (7%) higher than South Dakota's.
Average income
- South Dakota: $75,699 vs Texas: $69,823 average income per person (per capita personal income).
- South Dakota's average income is 1.1 times (8%) higher than Texas'.
South Dakota vs Texas Counties
Number of counties
- South Dakota has 66 counties, while Texas has 254.
- Texas' county count is 3.8 times (285%) higher than South Dakota's.
Biggest county by area
- South Dakota's largest county is Meade County at 3,471 square miles; Texas's is Brewster County at 6,184 square miles.
- Brewster County's land area is 1.8 times (78%) larger than Meade County's.
Smallest county by area
- South Dakota: Clay County (412 sq mi) vs Texas: Rockwall County (127 sq mi).
- Clay County's land area is 3.2 times (224%) larger than Rockwall County's.
Most populous county
- South Dakota: Minnehaha County (208,639 people) vs Texas: Harris County (5,009,302 people).
- Harris County's population is 24.0 times larger than Minnehaha County's.
Least populous county
- South Dakota: Jones County (874 people) vs Texas: Loving County (48 people).
- Jones County's population is 18.2 times larger than Loving County's.
Richest county
- South Dakota: Union County ($146,712 per capita income) vs Texas: Loving County ($220,625).
- Loving County's income is 1.5 times (50%) richer than Union County's.
Poorest county
- South Dakota: Ziebach County ($32,778 per capita income) vs Texas: Starr County ($34,180).
- Ziebach County and Starr County have about the same income.
South Dakota vs Texas Taxes
State income tax
- South Dakota has no state income tax, while Texas has no state income tax.
Property tax
- South Dakota: 1.02% effective rate vs Texas: 1.31% of home value per year.
- Texas's rate is 0.29 percentage points higher.
Sales tax
- South Dakota: 6.11% combined state and average local rate vs Texas: 8.2%.
- Texas's combined rate is 2.09 percentage points higher.
Official Websites
South Dakota official website · Texas official website
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More Size Comparisons
All South Dakota size comparisons · All Texas 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.