Source: patriciamallo / Flickr
15. Varanasi, India
> Population density: 58,701 people per square mile
> Population: 3.9 million
> Built-up land area in city: 67 square miles
Source: By Zaki.anwar - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=7013053 / Wikimedia Commons
14. Malegaon, India
> Population density: 60,083 people per square mile
> Population: 721,000
> Built-up land area in city: 12 square miles
Source: Syed Mahamudur Rahman / iStock Editorial via Getty Images
13. Chittagong, Bangladesh
> Population density: 60,527 people per square mile
> Population: 4.5 million
> Built-up land area in city: 74 square miles
Source: By Superfast1111 - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=33278443
12. Muzaffarnagar, India
> Population density: 64,000 people per square mile
> Population: 704,000
> Built-up land area in city: 11 square miles
Source: harshvardhanroy / iStock via Getty Images
11. Allahabad, India
> Population density: 64,362 people per square mile
> Population: 3.0 million
> Built-up land area in city: 47 square miles
