Mexico covers 1,962,279 km² km² on the new Equal Earth world map — 1.5%% of all land on Earth, making it the 13th largest country in the world and the 4th largest in North America. At 24° latitude Mercator only inflates Mexico by about 20%%, so the old and new maps largely agree on it — unlike the far north, where Mercator's stretch is dramatic.
For scale: Mexico is roughly the same size as Saudi Arabia (1,925,871 km² km²).
You could fit 3 of Afghanistan inside Mexico.