State (pop., 2000: 2,235,591), east-central Mexico.
It covers 8,036 sq mi (20,813 sq km), and its capital is Pachuca . It was part of the state of México until 1869, when it was established as a separate state in honour of the revolutionary patriot Toltec civilization; an archaeological site near Tula, west of Pachuca, is the remains of the Toltec capital. The state has major metalworking factories as well as agricultural production.