Vanuatu is about 9 times smaller than Tennessee.

Tennessee is approximately 106,752 sq km, while Vanuatu is approximately 12,189 sq km, making Vanuatu 11.42% the size of Tennessee. Meanwhile, the population of Tennessee is ~6.3 million people (6.0 million fewer people live in Vanuatu).
Tip: This to-scale comparison of Tennessee vs. Vanuatu uses the Mercator projection, which distorts the size of regions near the poles.