United States is about 19,281 times bigger than Flathead Lake.

Flathead Lake is approximately 510 km² (197 sq mi), while United States is approximately 9,833,517 sq km, making United States 1,928,041% larger than Flathead Lake.
Tip: This to-scale comparison of Flathead Lake vs. United States uses the Mercator projection, which distorts the size of regions near the poles.
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