Erer has had telephone service at least as early as 1967. Records at the Nordic Africa Institute website provide details of a primary school in Bentu Liben during the year 1968. Erer is served by a
station on the
Addis Ababa - Djibouti Railway. W.C. Barker recorded in 1842 that Erer was a usual stopping-point for caravans moving between
Djibouti and
Dire dawa, citing the words of an acquaintance who described the location as "a place at the foot of the
Oromo people hills, where there is a wadi with excellent water." As to the inhabitants, Barker notes that north of Erer dwelled the
Gurgura, "who are
Mahomedans", and subject to the
Issa Somali; to the south were the
Argobba; and to the east were the Nole and Ala
Oromo, "occupying the N[orth] and the S[outh] side of the road to Harrar." == Demographics ==