Jubail is a city in the Eastern province on the Persian Gulf

Persian Gulf

The Persian Gulf, in Southwest Asia, is an extension of the Indian Ocean located between Iran and the Arabian Peninsula.The Persian Gulf was the focus of the 1980–1988 Iran-Iraq War, in which each side attacked the other's oil tankers...

 coast of Saudi Arabia

Saudi Arabia

The Kingdom of Saudi Arabia , commonly known in British English as Saudi Arabia and in Arabic as as-Sa‘ūdiyyah , is the largest state in Western Asia by land area, constituting the bulk of the Arabian Peninsula, and the second-largest in the Arab World...

. It consists of the Old Town of Al Jubail, which was originally a small fishing village, up to 1975 and the new industrial area.

In 1975, Jubail was designated as a site for a new industrial city by the Saudi government, and has seen rapid expansion and industrialization since. The new Industrial City and residential areas were named Madīnat al Jubayl aṣ Ṣinā`īyah (Jubail Industrial City).