By the Numbers: Remembering 9/11

This year marks 15 years since the terrorist attacks of Sept. 11, 2001.

6

Days the New York Stock Exchange was closed due to the attacks.

20

Percentage of Americans who knew someone hurt or killed in the attacks.

23

Number of New York Police Department officers killed.

37

Number of Port Authority police officers killed.

99

Number of days fires continued to burn after the attack.

115

Number of nations whose citizens were killed in the attacks.

128

Number of World Trade Center companies in the towers that lost people.

343

Number of firefighters and paramedics killed.

1,609

Number of people who lost a spouse or partner in the attacks.

2,753

Total number killed in attacks in New York.

3,051

Estimated number of children who lost a parent.

146,100

Number of jobs lost in New York owing to the attacks.

422,000

Estimated number of New Yorkers suffering from post-traumatic-stress disorder as a result of 9/11.

1.8 million

Tons of debris removed from site.

$600 million

Estimated cost of cleanup.

$104 billion

Estimated amount donated to 9/11 charities.

$105 billion

Economic loss to New York in month following the attacks.

Source: New York magazine