The following data shows the development of the population of the town of Kölleda. In summary, it can be seen that the development of the population rose sharply at the time of National Socialism and the GDR. This is due on the one hand to the former air base and the aviation office and on the other hand to the radio factory, both of which were major employers in the town. As a result of the 30-year war, there has been a sharp decline in the population. After the Wende (GDR), there was a steady decline in the number of inhabitants until the incorporation of Großmonra in 2012.
