Lake · Montana, United States
How Big Is Flathead Lake?
Flathead Lake covers about 510 km² (197 sq mi), or 126,024 acres. That's about the same size as Guam.
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Flathead Lake
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How Flathead Lake Compares
Lake Tahoe
about the same size
Lake of the Ozarks
2.4× larger
Lake Okeechobee
3.7× smaller
Lake Norman
4× larger
Gaza Strip
40% larger
Martha's Vineyard
2.3× larger
Guam
about the same size
Antigua and Barbuda
15% larger
Montreal
18% larger
Barbados
19% larger
Saint Lucia
17% smaller
Tokyo
18% smaller
Montana
739× smaller
United States
19,281× smaller
More Lakes
Questions About the Size of Flathead Lake
How big is Flathead Lake?
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Flathead Lake covers about 510 km² (197 sq mi).
How many acres is Flathead Lake?
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About 126,024 acres.
Is Flathead Lake bigger than Guam?
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Not quite. They're about the same size: Flathead Lake covers 510 km² (197 sq mi) and Guam 544 km² (210 sq mi).
Which is bigger, Flathead Lake or Lake Tahoe?
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They're about the same size, but Flathead Lake is slightly bigger: 510 km² (197 sq mi) against 502 km² (194 sq mi).
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