Saint Lucia is about 1,101 times smaller than Texas.

Texas is approximately 678,052 sq km, while Saint Lucia is approximately 616 sq km, making Saint Lucia 0.09% the size of Texas. Meanwhile, the population of Texas is ~25.1 million people (25.0 million fewer people live in Saint Lucia).
Tip: This to-scale comparison of Texas vs. Saint Lucia uses the Mercator projection, which distorts the size of regions near the poles.