What was the estimated population of babylonia

It was perhaps the first city to reach a population above 200,000. It was perhaps the first city to reach a population above 200,000.

It has been estimated that Babylon was the largest city in the world c. 1770 - c. 1670 BC, and again c. 612 - c. 320 BC. It was perhaps the first city to reach a population above 200,000. Estimates for the maximum extent of its area range from 890 to 900 hectares (2,200 acres).