Özet:

Nowadays, the level of civilization has come to a measurable level with urbanization.  Today, 8 billion people around the world live in about 6 billion cities. Today, about 6 billion of the world’s 8 billion people live in cities, with more than 500 cities with more than 1 million people.  As a result of factors such as increasing environmental pollution in the late twentieth century, the extinction of natural environments, global climate change, the need for sustainable development has been revealed, it has also been considered to be the output point of cities. The concept of a healthy city is also a concept that emerges in this period. The World Health Organization (WHO) launched the Healthy Cities Project in 1987. Every year many cities around the world are members of the national and international networks of healthy cities within the framework of this project.  The most important object that forms a city is undoubtedly the demographic object. All the economic, social and physical conditions of any city vary according to the population development. All of these issues include the health of the community living in the city. The topic of this article is to discuss the importance of the population criterion and the impact of the population size on the formation of a healthy city. The main method within the scope of this article is to be able to translate literature on the concepts of urban development, population and healthy cities, to be able to reveal the current figures and current situation in relation to these topics, thus to be able to understand the role and progress of urban population in the world by revealing its importance for urban health, and also to be able to discuss the importance of the population criteria in the way of becoming a healthy city by generalizing certain standards.