It is identified with Horvat Yattir/Khirbet Attir, an archeological site in the southern Hebron Hills, located in modern day Israel.

In the early-4th century CE, Greek scholar Eusebius mentioned the town twice in his Onomasticon: "Ietheira is now a very large village in the interior of Daroma, situated near Malaatha", and later, "It is now the very large village of Ietheira, about twenty miles from Eleutheropolis, wholly Christian, in the inner Daroma, near Malatha.

[2] Jattir was identified by Edward Robinson with Khirbet Attir (Horvat Yattir), southwest of Hebron in the West Bank.

The settlement appears to have been destroyed at the end of the Bar Kokhba revolt.

[2] Victor Guérin thought that Jattir was identical with the village of Yater in Lebanon.