Size comparison

compared to

United States is about 359,083 times bigger than O'Hare Airport.

O'Hare Airport is approximately 27 km² (11 sq mi), while United States is approximately 9,833,517 sq km, making United States 35,908,175% larger than O'Hare Airport.
Tip: This to-scale comparison of O'Hare Airport vs. United States uses the Mercator projection, which distorts the size of regions near the poles.
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