The map above shows Hawaii and South Dakota side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Hawaii vs South Dakota Geography
Land area
- Hawaii has a land area of 6,423 square miles (16,634 km²), while South Dakota has 75,808 square miles (196,342 km²).
- South Dakota's land area is 11.8 times larger than Hawaii's.
Total area
- Hawaii: 10,970 square miles (28,412 km²) vs South Dakota: 77,116 square miles (199,729 km²), including inland and coastal water.
- South Dakota's total area is 7.0 times (603%) larger than Hawaii's.
Length
- Hawaii is 333 miles (536 km) long from north to south; South Dakota is 443 miles (712 km).
- South Dakota's north-south length is 1.3 times (33%) longer than Hawaii's.
Width
- Hawaii spans 386 miles (621 km) east to west; South Dakota spans 371 miles (597 km).
- Hawaii and South Dakota have about the same east-west width.
Highest point
- Hawaii's highest point is Mauna Kea at 13,795 feet (4,205 m); South Dakota's is Black Elk Peak at 7,198 feet (2,194 m).
- Mauna Kea is 6,597 feet higher than Black Elk Peak.
Lowest point
- Hawaii's lowest point is Pacific Ocean at 0 feet; South Dakota's is Big Stone Lake at 966 feet.
- Hawaii's lowest point is 966 feet lower.
Hawaii vs South Dakota Population and History
Population
- Hawaii has a population of 1,446,146 (2024), while South Dakota has 924,669 (2024).
- Hawaii's population is 1.6 times (56%) larger than South Dakota's.
Population density
- Hawaii: 225.2 people per square mile vs South Dakota: 12.2.
- Hawaii's population density is 18.5 times higher than South Dakota's.
Biggest city
- Hawaii's biggest city is Honolulu with 344,967 people; South Dakota's is Sioux Falls with 209,289.
- Honolulu's population is 1.6 times (65%) larger than Sioux Falls'.
Largest metro area
- Hawaii's largest metropolitan area is Urban Honolulu, HI metro area (998,747 people) vs South Dakota's Sioux Falls, SD-MN metro area (308,266).
- Urban Honolulu, HI metro area's population is 3.2 times (224%) larger than Sioux Falls, SD-MN metro area's.
History
- Hawaii: Admitted to the Union on August 21, 1959, as the 50th state.
- South Dakota: Admitted to the Union on November 2, 1889, as the 40th state.
- In its current form, South Dakota is the older of the two by 70 years.
Hawaii vs South Dakota Economy
GDP
- Hawaii's GDP is $117.6 billion (2024) vs South Dakota's $76.8 billion.
- Hawaii's economic output is 1.5 times (53%) larger than South Dakota's.
GDP per capita
- Hawaii: $81,339 per person vs South Dakota: $83,052.
- Hawaii and South Dakota have about the same GDP per capita.
Average income
- Hawaii: $71,019 vs South Dakota: $75,699 average income per person (per capita personal income).
- South Dakota's average income is 1.1 times (7%) higher than Hawaii's.
Hawaii vs South Dakota Counties
Number of counties
- Hawaii has 5 counties, while South Dakota has 66.
- South Dakota's county count is 13.2 times higher than Hawaii's.
Biggest county by area
- Hawaii's largest county is Hawaii County at 4,028 square miles; South Dakota's is Meade County at 3,471 square miles.
- Hawaii County's land area is 1.2 times (16%) larger than Meade County's.
Smallest county by area
- Hawaii: Kalawao County (12 sq mi) vs South Dakota: Clay County (412 sq mi).
- Clay County's land area is 34.3 times larger than Kalawao County's.
Most populous county
- Hawaii: Honolulu County (998,747 people) vs South Dakota: Minnehaha County (208,639 people).
- Honolulu County's population is 4.8 times (379%) larger than Minnehaha County's.
Least populous county
- Hawaii: Kalawao County (81 people) vs South Dakota: Jones County (874 people).
- Jones County's population is 10.8 times larger than Kalawao County's.
Richest county
- Hawaii: Honolulu County ($74,681 per capita income) vs South Dakota: Union County ($146,712).
- Union County's income is 2.0 times (96%) richer than Honolulu County's.
Poorest county
- Hawaii: Hawaii County ($57,694 per capita income) vs South Dakota: Ziebach County ($32,778).
- Hawaii County's income is 1.8 times (76%) richer than Ziebach County's.
Hawaii vs South Dakota Taxes
State income tax
- Hawaii has a top income tax rate of 11%, while South Dakota has no state income tax.
- Hawaii's top rate is 11 percentage points higher.
Property tax
- Hawaii: 0.27% effective rate vs South Dakota: 1.02% of home value per year.
- South Dakota's rate is 0.75 percentage points higher.
Sales tax
- Hawaii: 4.5% combined state and average local rate vs South Dakota: 6.11%.
- South Dakota's combined rate is 1.61 percentage points higher.
Official Websites
Hawaii official website · South Dakota official website
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More Size Comparisons
All Hawaii 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.