Former Largest Cities

Memphis Was Largest City From 3100 B.C. To 2800 B.C.

Largest City Around 2000 B.C.

Around 1300 B.C.

Around 300 B.C.

From 0-300 A.D.

From 350-550 A.D.

From 920-1000 A.D.

Around 1150 A.D.

Beijing, 1425-1625

London, 1820-1915

150-450 Ad

During The Unified Silla Period (618ad To 918ad), Gyeonju's Peak Population Likely Reached 1,000,000 Inhabitants (Wiki)

With A Good Probability The Worlds Largest City Around 7000 Bc With An Estimate Of 5000-10000 Inhabitants.

Possibly The Largest City Around 3500 Bc.

Chang’An (Xi’An) Had Around 400,000 Inhabitants Between 200 And 100 Bc

Hangzhou Had Around A Million Inhabitants Between 1200 And 1400.

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 (Wiki)