West Azerbaijan Province is one of the 31 provinces of Iran. It is in the northwest of the country, bordering Turkey, Iraq and Nakhchivan Autonomous Republic, and the provinces of East Azerbaijan, Zanjan and Kurdistan. The province is part of Region 3. It is separated from Armenia by Turkey's short border with the Azerbaijan Republic. The province of West Azerbaijan covers an area of 39,487 km², or 43,660 km² including Lake Urmia. In 2012 the province had a population of about 3 million (estimate). The capital city and largest city of the province is Urmia.