A district of Media to which captive Israelites were transported by the Assyrian kings (2 Kings 17:6; 18:11; 1 Chronicles 5:26). It lay along the banks of the upper Khabur, from its source to its junction with the Jerujer. Probably the district called by Ptolemy Chalcitis.
Source: Easton's Bible Dictionary
Halah
is probably a different place from the Calah of (Genesis 10:11) It may be identified with the Chalcitis of Ptolemy.