Saint Lucia is about 404 times smaller than Oregon.

Oregon is approximately 248,631 sq km, while Saint Lucia is approximately 616 sq km, making Saint Lucia 0.25% the size of Oregon. Meanwhile, the population of Oregon is ~3.8 million people (3.7 million fewer people live in Saint Lucia).
Tip: This to-scale comparison of Oregon vs. Saint Lucia uses the Mercator projection, which distorts the size of regions near the poles.