Zummar, also Zemar or Zumar, is both the name of an Iraqi subdistrict located in north Nineveh Governorate and of its seat, the town of Zummar. The population is a mix of Arabs and Kurds, most of whom work in agriculture. Wheat is the prime crop there.
In August 2014, Zummar subdistrict fell to ISIL's hands. In October 2014, Zummar was recaptured by the Peshmerga. From Wikipedia