Iowa is about 1.2 times smaller than Washington.

Washington is approximately 172,348 sq km, while Iowa is approximately 144,701 sq km, making Iowa 83.96% the size of Washington. Meanwhile, the population of Washington is ~6.7 million people (3.7 million fewer people live in Iowa).
This to-scale comparison of Washington vs. Iowa uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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