SANAA, Aug 30 (Reuters) - The death toll in Yemen's 18-month-old civil war stands at about 10,000, the U.N. Humanitarian Coordinator said on Tuesday, an increase from estimates of more than 6,000 cited by officials and aid workers for much of 2016.

Jamie McGoldrick told a new conference in the Yemeni capital that the new figure was based on official information provided by medical facilities in Yemen.

He said he believed the toll might be even higher since some areas had no medical facilities, and relatives there often buried loved ones directly.

(Reporting by Mohammed Ghobari, writing by Sami Aboudi, Editing by William Maclean) ((Sami.Aboudi@thomsonreuters.com; +97143918301;))