Hawaii is around the same size as Swaziland.

Swaziland is approximately 17,364 sq km, while Hawaii is approximately 16,635 sq km, making Hawaii 95.8% the size of Swaziland. Meanwhile, the population of Swaziland is ~1.1 million people (238,540 more people live in Hawaii).
Tip: This to-scale comparison of Swaziland vs. Hawaii uses the Mercator projection, which distorts the size of regions near the poles.