Where did the first Aztecs live?

The first Aztecs, known as the Mexica, originally settled in the region of northern Mexico, specifically around the area of modern-day Aztlán. They eventually migrated southward, eventually arriving in the Valley of Mexico. By the early 14th century, they established their capital city, Tenochtitlán, on an island in Lake Texcoco, which became the center of their empire.