![]() ![]() Shanghai alone has a population of 28m, from a base of less than 7m in 1980.Īnother related form of megaregion comes from areas of dense agriculture that begin to urbanise with looser patterns of small scale industry. A second megacity region is in the Yangtze River Delta, based around Shangai. This 'Greater Bay Area' has grown from population of only 10m in 1980. In the Pearl River Delta, Guangzhou, Shenzhen and Donguan have fused together to create a megacity region of 50m people (60m if Hong Kong and Macau are included). This process has created several of the world's biggest megacity regions, mainly located on the coast, as the economic growth of these cities has been based on manufacturing for exports, business services, and increasingly high-technology industries. In the last thirty years, China has undergone the largest process of urbanisation in history. A classic example is the northeastern seaboard of the USA, a megalopolis as Gottman termed it, stretching hundreds of miles from Washington through New York City to Boston, with around 50m people. In the early 20th century, geographers observed how rail and road networks were allowing rapidly growing cities to fuse together into vast sprawling conurbations. This is the world's largest agricultural region, supporting a population of around 450 million people in India and 120 million in Bangladesh. This is particularly the case along the Ganges plain in northern India, stretching nearly 2000km from just east of Delhi to Dhaka in Bangladesh. If we zoom in on India (click on links to focus the map), we can see the complexity of rural, peri-urban and urban landscapes, with thousands and thousands of villages, towns and cities in an intricate hierarchy. While India has many of the world's largest cities, it retains a huge rural population of around 900 million people. Both countries have a population of 1.4 billion, with India set to move ahead of China and reach 1.5 billion by 2030. India: the World's Most Populous CountryĪt the global scale, the world population density map highlights the immense concentration of humanity in India and China. Some introductory highlights from the data are discussed below with links for further information. This website has received 500,000 visitors since 2020, illustrating the widespread interest in global population geography. The GHSL records the complexity and diversity of human settlement, beyond simple rural-urban divisions. Integrating huge volumes of satellite data with national census data, the GHSL describes in detail the settlement geography of the entire globe, and has applications for a wide range of research and policy related to urban growth, development and sustainability. The data is from the Global Human Settlement Layer (GHSL) 2023 produced by the European Commission JRC and the Center for International Earth Science Information Network at Columbia University. This interactive map shows population density in 2020, measured in residents per square kilometre. Visualising Population Density Across the Globe He is on Twitter, far too much, as more of this stuff? Follow CityMetric on Twitter or Facebook. Jonn Elledge is the editor of CityMetric. Anyway – you should go play with the map yourself, is the point. I’m going to stop there because I could keep going all day. You can even spin the map round, if that’s your bag. I’ve circled Manchester in yellow, to highlight the point: Zoom out, and you can sort of see how Manchester sits at the centre of a network of northern towns and cities.Įven if you zoom further out, sort of. Greater Manchester looks more coherent, although Wigan, far to the west, doesn’t look much more integrated than Warrington. Looked at like this, Liverpool and the Wirral look like one city, but the towns of the borough of Sefton (Southport, Formby) look separate. It’s a similar effect in the north east where green belt means Sunderland still stands slightly apart from the rest of Tyne & Wear. Up in the Midlands, you can see how Birmingham and Wolverhampton are a single conurbation, but Coventry is separated from it by several miles of open countryside – just one of many smaller cities with close ties to Birmingham. It seems to extend further from west to east, along the Thames from Reading to Southend, than it does from north to south, where hills start to get in the way. If you keep zooming out – which, admittedly, involves changing your browser settings (Ctrl + -) – you can start to see the shape of the capital’s commuter belt. ![]()
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