Armenia is a municipality in the Sonsonate department of El Salvador. It was founded by Spaniards and a small group of Armenians, there we…Armenia is a municipality in the Sonsonate department of El Salvador. It was founded by Spaniards and a small group of Armenians, there were a significant amount of indigenous people living there when Europeans arrived. According to the official census of 2007, it has a population of 34,912 inhabitants.