To the north of Isin are Igbajaland, Oraland and Ireland; to the west are Ajasse Ipo and Oro; to the east are Oro-Ago and Olla and Osi in Ekiti LG; while to the south are Apaland, Arandun and Omu-Aran.

Firstly, it is held that, the name was coined from “Igi Isin” (an ackee apple tree).

Another source still using the ackee apple tree as the source of the name, states that Olupo of Ajase-Ipo and Aina the founder of Isanlu Isin were cured of certain decease by a diviner, who used the bark of the ackee apple tree to treat them.

Others states that the area was called Isin after Esinkin Onigbonigbo a great warrior of Isanlu.

To clarify this, the source said that Aina the founder of isanlu, had troubles right from his original home in Ile-Ife.

It is said that he left Ife to find peace, but met several attack on the way by the Nupes, Ibadan, Oyo and the Fulanis.

Among these versions, the one which seam probable is that which states that Isin was coined from the word “Ile-Isinmi” (land of rest) because Aina did experience unrest before he finally got to Igbole at Odo-Owa.