State size comparison

compared to

Iowa is about 1.4 times smaller than South Dakota.

South Dakota is approximately 196,540 sq km, while Iowa is approximately 144,701 sq km, making Iowa 73.62% the size of South Dakota. Meanwhile, the population of South Dakota is ~814,180 people (2.2 million more people live in Iowa).
Tip: This to-scale comparison of South Dakota vs. Iowa uses the Mercator projection, which distorts the size of regions near the poles.
Share

Compare further: Iowa vs. South Dakota

Flip Comparison · See true size
See Iowa on top of South Dakota
→
Quality of Life Comparison · 10 statistics
Be 27.3% less likely to be unemployed in South Dakota
→
Cost of Living Comparison · 7 categories - 2026 data
South Dakota is 5.8% cheaper than Iowa
→
Our free app, MapSize by MyLifeElsewhere — compare any two places, to scale on your mobile device.
Download on the App Store GET IT ON Google Play