New Orleans is around the same size as Saint Vincent and the Grenadines.

Saint Vincent and the Grenadines is approximately 389 sq km, while New Orleans is approximately 439 sq km, making New Orleans 13% larger than Saint Vincent and the Grenadines.
Tip: This to-scale comparison of Saint Vincent and the Grenadines vs. New Orleans uses the Mercator projection, which distorts the size of regions near the poles.