Deyr County (Persian: شهرستان دَیِّر)[a] is in Bushehr province, Iran.

[citation needed] After the 2006 National Census, the village of Bardestan was elevated to the status of a city.

The population nowadays is Muslim; the Jewish inhabitants left the county in 1979.

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

Deyr county has various mammal and bird species, such as camels, deer, foxes, rabbits, owls, hawks and flamingos, and caracals, striped hyenas, wolves and jackals rarely can be seen.

Mond natural reservation has an area of 464 km2, conserving local animals and plants.