Nishapur County (Persian: شهرستان نیشاپور)[a] is in Razavi Khorasan province, Iran.

The Mongol armies of Genghis Khan massacred the entire population of the area, which some estimates put at 1,747,000 citizens.

[b] In addition, the village of Bar was elevated to the status of a city.

[2] Nishapur County's population history and administrative structure over three consecutive censuses are shown in the following table.

Media related to Nishapur County at Wikimedia Commons