Iowa is about 37 times bigger than South Georgia and South Sandwich Islands.

South Georgia and South Sandwich Islands is approximately 3,903 sq km, while Iowa is approximately 144,701 sq km, making Iowa 3,607% larger than South Georgia and South Sandwich Islands.
Tip: This to-scale comparison of South Georgia and South Sandwich Islands vs. Iowa uses the Mercator projection, which distorts the size of regions near the poles.

Compare further: Iowa vs. South Georgia and South Sandwich Islands