Mackinac Island is around the same size as Biltmore Estate.

Biltmore Estate is approximately 9.27 km² (3.58 sq mi), while Mackinac Island is approximately 9.54 km² (3.68 sq mi), making Mackinac Island 3% larger than Biltmore Estate.
Tip: This to-scale comparison of Biltmore Estate vs. Mackinac Island uses the Mercator projection, which distorts the size of regions near the poles.
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