Saint Lucia is about 33 times smaller than Massachusetts.

Massachusetts is approximately 20,306 sq km, while Saint Lucia is approximately 616 sq km, making Saint Lucia 3.03% the size of Massachusetts. Meanwhile, the population of Massachusetts is ~6.5 million people (6.4 million fewer people live in Saint Lucia).
Tip: This to-scale comparison of Massachusetts vs. Saint Lucia uses the Mercator projection, which distorts the size of regions near the poles.