Why is El Salvador one of the most densely populated countries in Central America?

El Salvador’s high population density is primarily rooted in its long history of settlement within the intermontane basins of the central highlands. For millennia, these fertile areas supported large communities of Indigenous people who relied on the cultivation of crops like corn, beans, and squash.1

During the colonial period, this concentration was reinforced as major Spanish settlements were established in these same central basins. The trend continued through the commercial production of indigo and sugar, and later, the 19th-century expansion of coffee cultivation, which became the foundation of the national economy.1

In the 20th century, rapid urban growth and industrialization further intensified this concentration in the highland center. Additionally, internal displacement caused by civil conflict in the 1980s drove many people from rural zones toward these central cities. While the country has experienced significant out-migration, overcrowding remains a persistent challenge, with a population density of approximately 785.8 people per square mile as of 2026.23