This year, as in 2017, there are 37 megacities --- urban areas estimated to have more than 10 million residents. The 20 largest urban areas are indicated in Figure 1. Tokyo-Yokohama continued to be the largest, as it has been for more than six decades. Second ranked Jakarta and third ranked Delhi continue to edge up on Tokyo-Yokohama. Even if their much faster growth were to continue at the current rate, neither would assume the top position over Tokyo-Yokohama until after 2030. The top five is rounded out by Manila and Seoul-Incheon (Figure 2). The balance of the top ten includes Shanghai, Mumbai (Figure 3), New York, Beijing and Sao Paulo.

The 14th Annual Demographia World Urban Areas contains data on the 1,064 urban areas that have been identified as having more than 500,000 residents in 2018 (Note: Estimating Urban Density). Table 2 in the report lists all of these urban areas in order by population. Table 1 is a world summary of urban density data.

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