List of largest cities
| City[a] | Country | UN 2018 population estimates[b] | City proper[c] | Metropolitan area[d] | Urban area[9] | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Definition | Population | Area (km2) | Density (/km2) | Population | Area (km2) | Density (/km2) | Population | Area (km2) | Density (/km2) | |||
| Tokyo |  Japan | 37,400,068 | Metropolis prefecture | 13,515,271 | 2,191 | 6,169 [14] | 37,274,000 | 13,452 | 2,771 [15] | 39,105,000 | 8,231 | 4,751 [e] |
| Delhi |  India | 28,514,000 | Capital City | 16,753,235 | 1,484 | 11,289 [16] | 29,000,000 | 3,483 | 8,326 [17] | 31,870,000 | 2,233 | 14,272 [f] |
| Shanghai |  China | 25,582,000 | Municipality | 24,870,895 | 6,341 | 3,922 [18][19] | N/A | N/A | N/A | 22,118,000 | 4,069 | 5,436 [g] |
| São Paulo |  Brazil | 21,650,000 | Municipality | 12,252,023 | 1,521 | 8,055 [20] | 21,734,682 | 7,947 | 2,735 [21] | 22,495,000 | 3,237 | 6,949 [h] |
| Mexico City |  Mexico | 21,581,000 | City-state | 9,209,944 | 1,485 | 6,202 [22] | 21,804,515 | 7,866 | 2,772 [23] | 21,505,000 | 2,385 | 9,017 |
| Cairo |  Egypt | 20,076,000 | Urban governorate | 9,500,000 | 3,085 | 3,079 [24] | N/A | N/A | N/A | 19,787,000 | 2,010 | 9,844 |
| Mumbai | India | 19,980,000 | Municipality | 12,478,447 | 603 | 20,694 [25] | 24,400,000 | 4,355 | 5,603 [26] | 22,186,000 | 1,008 | 22,010 [27][i] |
| Beijing | China | 19,618,000 | Municipality | 21,893,095 | 16,411 | 1,334 [18][19] | N/A | N/A | N/A | 19,437,000 | 4,172 | 4,659 |
| Dhaka |  Bangladesh | 19,578,000 | Capital city | 8,906,039 | 338 | 26,349 [28][29] | 14,543,124 [30] | N/A | N/A | 16,839,000 | 456 | 36,928 |
| Osaka | Japan | 19,281,000 | Designated city | 2,725,006 | 225 | 12,111 [14] | 19,303,000 | 13,228 | 1,459 [15] | 15,490,000 | 3,020 | 5,129 |