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40. Port Said, Egypt
> Population density: 43,438 people per square mile
> Population: 695,000
> Built-up land area in city: 16 square miles
Source: Pasu Lo-utai / iStock via Getty Images
39. Agra, India
> Population density: 43,712 people per square mile
> Population: 2.9 million
> Built-up land area in city: 66 square miles
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38. Solapur, India
> Population density: 43,760 people per square mile
> Population: 1.1 million
> Built-up land area in city: 25 square miles
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37. Aurangabad, India
> Population density: 44,028 people per square mile
> Population: 1.6 million
> Built-up land area in city: 36 square miles
Source: Kabir Uddin / iStock via Getty Images
36. Rajshahi, Bangladesh
> Population density: 44,167 people per square mile
> Population: 530,000
> Built-up land area in city: 12 square miles
