Its capital was at al-Mu'miniya near modern Hofuf. By circa 1000, Al-Ahsa became the ninth largest city worldwide supporting 100,000 inhabitants. In 1077, the Qarmatian state of Al-Ahsa was overthrown by the Uyunids.
The capital of this area was situated at al-Mu'miniya near modern Hofuf. By approximately 1000 CE, Al-Ahsa had expanded to become one of the largest cities in the world with a population exceeding 100,000 people. In 1077, the Qarmatian state of Al-Ahsa was overthrown by the Uyunids.