Kingdom of Hejaz
Jeddah is located in Saudi Arabia's Red Sea coastal plain (called Tihamah). Jeddah lies in the Hijazi Tihama () region which is in the lower Hijaz mountains. Historically, politically and culturally, Jeddah was a major city of Hejaz Vilayet, the Kingdom of Hejaz and other regional political entities according to Hijazi history books. It is the 100th largest city in the world by land area.