Top 10 Largest Urban Area Cities in the world based on population

An urban area is the region surrounding a city. Most inhabitants of urban areas have non-agricultural jobs. Urban areas are very developed, meaning there is a density of human structures such as houses, commercial buildings, roads, bridges, and railways.

"Urban area" can refer to towns, cities, and suburbs. An urban area includes the city itself, as well as the surrounding areas. When two or more metropolitan areas grow until they combine, the result may be known as a megalopolis.

These are the Top Ten Largest Urban Area Cities in the world based on population.
Sources :

A: National census authority data agglomeration data (land area or population).

B: Demographia land area estimate based upon map or satellite photograph analysis.

C: Demographia population estimate from lower order jurisdictions, including resuction for rural areas.

D: Population estimate based upon the United Nations agglomeration estimate.

E: Demographia population estimate from national census authority data.

F: Other Demographia population estimate, such as from unofficial local reports.

L: Demographia population estimate from local authority data.

N: Combined urban area using national census authority data.

1. Tokyo, Japan

Population : 37,239,000              Area :   8,547 km²               Density :  4,400 / km²              Sources : D/B

View of Shinjuku skyscrapers and Mount Fuji, Tokyo, by Morio

2. Jakarta, Indonesia

Population : 26,746,000              Area :   2,784 km²               Density :  9,600 / km²              Sources : C/B

Jakarta, Indonesia © blog888

3. Seoul, South Korea

Population : 22,868,000              Area :   2,163 km²               Density : 10,600 / km²             Sources : C/B

Seoul by day, by Alex Murphy

4. Karachi, Pakistan

Population : 23,300,000              Area :      803 km²               Density : 26,000 / km²             Sources : C/B

One of the main thoroughfares of Karachi, by No Real

5. Delhi, India

Population : 22,826,000              Area :   1,943 km²               Density : 11,800 / km²             Sources : A/B

Sprawling suburb of Noida, by McKay Savage

6. Shanghai, China

Population : 21,766,000              Area :   3,497 km²               Density :  6,200 / km²             Sources : C/B

Shanghai city, by Joy Ito

7. Manila, Philippines

Population : 21,241,000              Area :   1,437 km²               Density : 14,800 / km²            Sources : C/B

Manila skyline during the day, by aSIMULAtor

8. New York, United States

Population : 20,673,000              Area : 11,642 km²               Density :  1,800 / km²              Sources : N/N

New York city, by alain maury

9.Sao Paulo, Brazil

Population : 20,568,000              Area :   3,173 km²              Density :  6,500 / km²              Sources : C/B

Sao Paulo Business District, by Caio do Valle

10. Mexico City, Mexico

Population : 20,032,000              Area :   2,046 km²              Density :  9,800 / km²              Sources : C/B

Mexico City, Mexico, by Casper Christensen