Masumabad (Persian: معصوم اباد, also Romanized as Ma‘şūmābād; also known as Ma‘ẕūmābād, Kaleh Māsūmābād, and Qal‘eh Māsūmābād)[1] is a village in Petergan Rural District, Central District, Zirkuh County, South Khorasan Province, Iran.

At the 2006 census, its population was 201, in 50 families.

[2] This Zirkuh County location article is a stub.

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