Guidan-Roumdji sashe ne daga cikin sassan dake a yankin Maradi, na Jamhuriyyar Nijar. Babban birnin sashen shine garin Guidan-Roumdji. Bisaga kidayar 2011, yawan mutane a sashen ya kai 485 743. "Annuaires_Statistiques" (PDF). Institut National de la Statistique. Retrieved 26 December 2019.