hollow core

…part of Mexico’s so-called “hollow core” because many residents have left to seek jobs in the Federal District, along the U.S.-Mexican border, or farther north. Area 24,351 square miles (63,068 square km). Pop. (2020) 2,822,255.

…part of Mexico’s so-called “hollow core” as many of its residents moved elsewhere, seeking work in the United States, along the U.S.-Mexican border, or in the Federal District. The rail, highway, and air routes traversing the state link Zacatecas city with El Paso (Texas) and Mexico City. Area 28,283…