 The government had estimated that 1.3 million was the optimal size for Adelaide which meant that Monarto would have about 200,000 people by the end of the century.Monarto was to become a new city that would work as a satellite city to Adelaide and, since it was far enough away, it was important that Monarto would have its own identity and economy.This made it difficult to define what kind of city Monarto was supposed to be.