Almost everyone at this crosswalk in Wheaton, Md., had a phone in use. In crosswalks, on escalators or even at home, people often ignore the hazards of using cellphones while walking. (Michael S. Williamson/The Washington Post)

You have seen the zombie-like creatures walking among us. In fact, you may be one of them, moseying along with your eyes fixated on that tiny screen that rests in the palm of your hand.

Americans overwhelmingly think this is okay. It’s not.

“It’s just really dangerous,” said Deborah Hersman, who heads the National Safety Council and is former chairman of the National Transportation Safety Board. “Everybody walking down the sidewalk either has their headphones on or is looking down at their phone. It’s a sad commentary on our society when you look at how distracted people are.”

By now, everyone knows that talking or texting while driving can get you killed. But the fact that 3,154 people died and an estimated 424,000 were hurt in 2013 is evidence that a great many people are willing to ignore the advice to keep their attention on the road.

A woman on an escalator checks her phone at the Mall in Columbia Mall in Maryland. (Michael S. Williamson/The Washington Post)

News that you could get hurt or even die while walking around — made oblivious to your surroundings by your cellphone obsession — isn’t very like to be more persuasive. But there is plenty of anecdotal evidence and an emerging body of research to back up those warnings.

“Some data suggests that at any given moment on the streets of America, 60 percent of pedestrians are distracted while walking, meaning either on the phone or doing something on their phone,” said Alan S. Hilibrand of the American Academy of Orthopaedic Surgeons. “It’s a bit of a startling number.”

Hilibrand, vice chairman of orthopaedic surgery at Thomas Jefferson University Hospital in Philadelphia, has seen evidence of what he calls “digital deadwalkers” on center-city streets.

“We’ve had people come into the emergency room who were hit by cars,” he said. “They’re looking at their phone and not paying attention to the fact that a vehicle is making a turn.”

In a bizarre tragedy a few blocks from Hilibrand’s hospital in May, a 68-year-old woman visiting from Texas was said to be looking down at her iPad as she crossed a street in the city’s Chinatown. She was hit by an amphibious duck boat filled with tourists and died of head injuries.

As mobile devices have become more ubiquitous, the number of emergency room visits by distracted walkers has climbed steadily. Some of the best information is a bit out of date, but it gives a sense of the trend. In 2005, 256 pedestrians injured while using phones received hospital treatment, a number that grew sixfold by 2010.

“I would say the really rapid explosion and proliferation of these devices has taken off in the last five years, so I suspect the numbers have jumped quite a bit,” said Hersman, whose National Safety Council compiled data from several different reports in its annual statistical safety profile.

One surprise was that more than half of injuries happened while people were fixated on their cellphones while walking in their homes. Overall, more than two-thirds of the injured were women, and slightly more than half were under age 40. More than 20 percent were age 71 or older.

“I do it if there’s not a lot of people around,” said Courtney Thomas, 32, when his communion with his cellphone was interrupted on 12th Street NW, just below H street, in the District. “I’ve seen videos of people falling into fountains and running into signs, so I look up every couple of seconds.”

One Chinese city, Chongqing, home to more than 9 million people, has put up satirical “no cellphone” lanes on the sidewalk to remind people their distraction can be dangerous and annoying.

A recent survey by the Pew Research Center found that Americans have grown comfortable using their mobile devices in public, and nowhere more so than “while walking down the street,” which 77 percent said was generally okay.

“I was just checking something my brother sent me on e-mail,” said Cameron Ratliff, 27, as he crossed 11th Street NW at G Street recently. “Usually, if I look at it, it’s when I’m stopped at a crosswalk. I’ve never run into anything.”

Hersman said it’s hard for most people to ignore their phones.

“We’re dealing now with an addiction to these electronic devices that is, frankly, all-consuming,” she said. “When something beeps or buzzes or dings or vibrates, it really is as compelling as someone tapping you on the shoulder. People are being conditioned to engage in these activities and they get immediate gratification for that. Our brains get a hit of dopamine every time we open a message.”

Kwasi Frye, who works for a D.C. firm that makes apps for mobile devices, was making his way down 11th Street NW recently, his eyes fixed on his cellphone. He was asked whether he usually looks at his phone while moving down the sidewalk.

“Yeah,” Frye said, “but unfortunately I don’t have a lot of time to talk right now. Could we do this over e-mail?”