Istanbul became very populated residence around 3000 BC. Some small town governments were established during that period of time. Researches have shown that today’s Sultanahmet square and its surroundings were main residential areas at that time.

They lived in both the Anatolian and European sides of the city. They were nomadic or semi nomadic. They later established a stable life based on fishing, agriculture and cattle growing. For example, Fikirtepe research has discovered that dogs, sheep, goats, cows and pigs were domesticated and that fishing was done as early as 6000 BC. Some tombs and stone tools were found during these excavations.