Top Twenty metropolitan areas by population

Rank	Metropolitan area	Country	Population	Area (km2)	Population Density (People/km2)
1	Tokyo	Japan	32,450,000	8,014	4,049
2	Seoul	South Korea	20,550,000	5,076	4,048
3	Mexico City[3]	Mexico	20,450,000	7,346	2,784
4	New York City[4]	United States	19,750,000	17,884	1,104
5	Mumbai	India	19,200,000	2,350	8,170
6	Jakarta	Indonesia	18,900,000	5,100	3,706
7	São Paulo	Brazil	18,850,000	8,479	2,223
8	Delhi	India	18,600,000	3,182	5,845
9	Osaka-Kobe-Kyoto	Japan	17,375,000	6,930	2,507
10	Shanghai	People's Republic of China	16,650,000	5,177	3,216
11	Metro Manila	Philippines	16,300,000	2,521	6,466
12	Hong Kong-Shenzhen[5]	People's Republic of China	15,800,000	3,051	5,179
13	Los Angeles[6]	United States	15,250,000	10,780	1,415
14	Kolkata	India	15,100,000	1,785	8,459
15	Moscow	Russia	15,000,000	14,925	1,005
16	Greater Cairo	Egypt	14,450,000	1,600	9,031
17	Greater Buenos Aires	Argentina	13,170,000	10,888	1,210
18	London	United Kingdom	12,875,000	11,391	1,130
19	Beijing	People's Republic of China	12,500,000	6,562	1,905
20	Karachi	Pakistan	11,800,000	1,100	10,727