Saint Vincent and the Grenadines is about 1.5 times bigger than Sacramento.

Sacramento is approximately 253 sq km, while Saint Vincent and the Grenadines is approximately 389 sq km, making Saint Vincent and the Grenadines 54% larger than Sacramento.
Tip: This to-scale comparison of Sacramento vs. Saint Vincent and the Grenadines uses the Mercator projection, which distorts the size of regions near the poles.