Nebuchadnezzar II took Jerusalem in 597 BCE and deported King Jehoiachin with the court, military and skilled classes; after a revolt he returned in 587/586, destroyed the city and the temple, and carried off a second group, with a third deportation following in 582. Those removed were settled in the Babylonian countryside, especially around Nippur, in villages named for their places of origin — the cuneiform archives from Al-Yahudu, 'the town of Judah', show deportee families holding land in exchange for taxes, labour and military service over some 160 years. A substantial population remained in Judah under a Babylonian-appointed administration at Mizpah, and others fled to Egypt. After Cyrus II took Babylon in 539 BCE, Persian policy permitted return and the rebuilding of the temple, and part of the community went back while a large and permanent Jewish population remained in Mesopotamia. The numbers are contested because the two biblical tallies disagree by a factor of three or more, and archaeology measures overall population collapse rather than deportation specifically.
Nebuchadnezzar II of Babylon deposed the Judaean monarchy in successive campaigns, destroyed Jerusalem and its temple, and deported the kingdom's ruling, priestly and artisan classes to Babylonia
The estimate is archaeological rather than textual: Magen Broshi and Israel Finkelstein's settlement surveys, which calculate population from built-up area and density coefficients, put late Iron Age Judah at roughly 110,000, with other reconstructions ranging from about 75,000 to 150,000. The biblical figures for the deportations (2 Kings 24 gives 10,000, Jeremiah 52 gives 4,600) are not consistent with each other, and most scholars treat the total deported across the campaigns of 597, 587 and 582 BCE as something in the range 10,000-20,000, drawn disproportionately from the Jerusalem elite.
No usable range exists. The siege and sack of Jerusalem in 586 BCE caused deaths from fighting, starvation and executions of officials described in 2 Kings and Jeremiah, but no source gives numbers and the archaeological record cannot separate war deaths from emigration in the region's population decline.
The siege of Jerusalem, the burning of the temple and city, and the land-for-service obligations imposed on deportees in Babylonia are documented in the biblical narrative and in the Al-Yahudu cuneiform archive discussed by Alstola.
Palestine, Iraq