Mexico is about 388 times bigger than Delaware.

Delaware is approximately 5,060 sq km, while Mexico is approximately 1,964,375 sq km, making Mexico 38,722% larger than Delaware. Meanwhile, the population of Delaware is ~897,934 people (128.3 million more people live in Mexico).
Tip: This to-scale comparison of Delaware vs. Mexico uses the Mercator projection, which distorts the size of regions near the poles.