Kirkuk (kĬrkōōk´), city (1987 pop. 418,624), NE Iraq. It is a center of Iraq's oil industry and is connected by pipelines to ports on the Mediterranean Sea. Kirkuk is a market for the region's produce, including cereals, olives, fruits, and cotton. There is a small textile industry. Kirkuk is built on a mound containing the remains of a settlement dating back to 3000 BC Kirkuk's population is mix of Turkomans, Kurds, and Arabs as well as many minorities; forced resettlement of many Kurds in the late 20th cent. reduced their numbers in the city and prompted a Kurdish migration back into the city and the surrounding province after the U.S. invasion of Iraq. In 2014 Kurdish forces took control of the city when the Iraqi army abandoned it in the face of a Sunni Islamist offensive.