What was population of Baku in 20th century?

In the early 20th century, Baku's population experienced significant growth due to its booming oil industry. By 1900, the population was around 100,000, and it surged to approximately 200,000 by 1926. The city continued to expand, reaching about 400,000 residents by the mid-1930s. By the end of the century, specifically in 1990, Baku's population was estimated at around 1.2 million.