Al-Zulfi is the most populous city in the Al-Zulfi Governorate, which encompasses the Al-Zulfi Emirate of Riyadh Province within the Kingdom of Saudi Arabia. It is situated in the center of the governorate, on the periphery of Shuaib Samnan, between the Tuwaiq Mountains and the sand dunes of Nafud al-Thuwairat. The city's population is 68,317.