New Mexico is about 388 times bigger than Kiribati.

Kiribati is approximately 811 sq km, while New Mexico is approximately 314,310 sq km, making New Mexico 38,656% larger than Kiribati. Meanwhile, the population of Kiribati is ~114,189 people (1.9 million more people live in New Mexico).
Tip: This to-scale comparison of Kiribati vs. New Mexico uses the Mercator projection, which distorts the size of regions near the poles.