New Jersey in the 21st century has been deeply affected by terrorism and political controversy.

September 11, 2001

In the morning of September 11, 2001, hijackers took control of four domestic U.S. commercial airliners. All of the planes crashed, none of them in New Jersey; however, two of them crashed into the two tallest towers of the World Trade Center in New York City, which collapsed within two hours (and was seen from the Gold Coast in New Jersey), and Todd Beamer, of New Jersey, is thought to have played a role in bringing down Flight 93 short of the terrorists' intended target. The destruction of the twin towers could be seen from New Jersey. The official count records 2,986 deaths in the attacks, including around 700 residents of New Jersey. Over 160,000 people were evacuated from the Manhattan area to New Jersey because the subways had been closed down and PATH station had been closed down and were eventually destroyed in the collapse.

New Jersey in the 21st century

After the attack, the World Trade Center station remained closed for two years. The Exchange Place station was also forced to close due to the flooding of the PATH transit tunnel. PATH service to Lower Manhattan was restored in 2003 after the opening of a temporary station on the World Trade Center site. During the intervening time period, transit service to Lower Manhattan was largely provided by the rapid expansion of NY Waterway ferry service.

New Jersey in the 21st century

Many schools in New Jersey closed for the day, evacuated, or were locked-down. The destruction of 30% (28.7 million sq ft) of Lower Manhattan office space accelerated the pre-2001 trend of moving jobs from Lower Manhattan to Midtown and New Jersey. Many questioned whether this loss of jobs and its associated tax base would ever be restored.

New Jersey in the 21st century

Anthrax attacks

Over several weeks in late 2001, seven letters, all bearing a Trenton, New Jersey postmark and containing anthrax bacteria, were mailed to several news media offices and two US Senators, resulting in the deaths of five people and causing twenty-two people to develop anthrax infections. The crime still remains unsolved.

The first set of anthrax letters were postmarked September 18, 2001, exactly one week after the September 11, 2001 attacks. Five letters are believed to have been mailed at this time, to ABC News, CBS News, NBC News and the New York Post, all in New York City; and the National Enquirer at American Media, Inc. (AMI) in Boca Raton, Florida. AMI also publishes a tabloid called Sun where Robert Stevens, the first person who died from the mailings, worked. Only the New York Post and NBC News letters were actually found; the existence of the other three letters is inferred from the pattern of infection. The anthrax found in the New York Post letter is reported to have become damp before being discovered. Scientists examining the anthrax from the New York Post letter said it appeared as a coarse brown granular material looking like Purina Dog Chow.

Two additional anthrax letters, bearing the same Trenton postmark, were dated October 9, three weeks after the first mailing. The letters were addressed to two Democratic Senators, Tom Daschle of South Dakota and Patrick Leahy of Vermont. More potent than the first anthrax letters, the material in the Senate letters was a highly refined dry powder consisting of approximately one gram of nearly pure spores. Some reports described the material in the Senate letters as "weaponized" or "weapons grade" anthrax. The Daschle letter was opened by an aide on October 15, and the government mail service was shut down. The unopened Leahy letter was discovered in an impounded mail bag on November 16. The Leahy letter had been misdirected to the State Department mail annex in Sterling, Virginia, due to a misread Zip code; a postal worker there, David Hose, contracted inhalation anthrax.

Twenty-two people developed anthrax infections, eleven of the life-threatening inhalation variety. Five died of inhalation anthrax. In addition to the death of Robert Stevens in Florida, two died from unknown sources, possibly cross-contamination of mail: Kathy Nguyen, a Vietnamese immigrant from New York City; and Ottilie Lundgren, a 94-year-old woman from Oxford, Connecticut, who was the final victim. The two remaining deaths were employees of the Brentwood mail facility in Washington, D.C., Thomas Morris Jr. and Joseph Curseen.

Thousands of people took a two-month course of the antibiotic Cipro in an effort to preempt anthrax infections. Associated Press reported that members of Vice President Cheney's staff took Cipro a week before the first anthrax attack.