New Mexico is about 9 times smaller than Argentina.

Argentina is approximately 2,780,400 sq km, while New Mexico is approximately 314,310 sq km, making New Mexico 11.3% the size of Argentina. Meanwhile, the population of Argentina is ~46.2 million people (44.2 million fewer people live in New Mexico).
Tip: This to-scale comparison of Argentina vs. New Mexico uses the Mercator projection, which distorts the size of regions near the poles.