Ijigban yana daga cikin gundumomi ashirin da biyu da aka samo a yankin ƙabilar Idoma a yau. Tana mamaye da ƙasa daga yankin kudu na Idoma zuwa iyakar yankin Ibo, musamman bangaren Abakaliki . Sun fada ne a kan iyakar ƙabilar Idoma da Ezza / Izze a arewacin yankin Ibo . Ƙidayar 2006 ta ƙidaya kusan mutane 22,360 Ijigban. Mutanen sun rayu ne a kan iyakar arewa maso yamma ta Igumale; Ulayi a yamma; Utonkon a arewa; Ekele da Igede zuwa arewa maso gabas da kuma Izza / Izze Igbo a kudu. Gundumar dai tana yankin kudu ne na ƙaramar hukumar Ado, kuma ta ƙunshi ƙabilu bakwai (a cewar tsofaffi): Okpe, Ipole, Ehaje, Ogongo, Adegemi, Onogwu da Ai-Okpan, waɗanda suka haɗa ɓangarorin siyasa biyu. Labarai game da asalin Ijigban, kamar asalin labarai na 'yan Najeriya da yawa, gami da mutanen Idoma gabaɗaya, suna da matsala sosai. Kalmar "asali" a cikin mahimmancin ma'anar ilimin ɗan adam tana nuni ne ga samuwar wani nau'in dabbobi ko na dabbobi, kamar yadda ya bambanta da wani nau'in ". Labarai na asali a cikin yanayin Ijigban anan sune labarai ne da mutane suke amfani da shi don bayyana inda kakanninsu suka fito, da kuma yadda suka iso wurin da suke zaune yanzu.