Saint Lucia is about 167 times smaller than Kentucky.

Kentucky is approximately 102,896 sq km, while Saint Lucia is approximately 616 sq km, making Saint Lucia 0.6% the size of Kentucky. Meanwhile, the population of Kentucky is ~4.3 million people (4.2 million fewer people live in Saint Lucia).
Tip: This to-scale comparison of Kentucky vs. Saint Lucia uses the Mercator projection, which distorts the size of regions near the poles.