In Silicon Valley – the home to tech giants like Google, Facebook, and Apple – tree-lined streets are filling with tents, cots, and dilapidated RVs.

A photo series by the Associated Press shows what life is like for the area’s retail clerks, plumbers, janitors – even teachers – who go to work and sleep where they can.

Silicon Valley has the highest median income in the nation. But a worsening wealth gap has caused homelessness to surge. More than 10,000 people were living without shelter across San Jose and Santa Clara Counties on any given night in 2016, though that figure is probably low.

These photos give a glimpse of life on the streets in Silicon Valley.

The area’s tech boom has created a new economic class: the working homeless.

Foto: source Marcio Jose Sanchez/AP

In the same affluent, suburban cities where Google, Apple, Facebook, and Tesla built their headquarters, thousands of people work regular jobs and come home to cars and RVs.

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Foto: source Marcio Jose Sanchez/AP

Source: AP

“We still need to eat,” said Tes Saldana, who works in the restaurants of two hotels in Palo Alto, California. She lives with her three adult sons in a camper she parks on the street.

Foto: A row of RVs where people live and sleep in Mountain View, California. source Marcio Jose Sanchez/AP

An influx of tech workers along with decades of under-building has created a historic housing shortage in the San Francisco Bay Area. The cost of living is sky-high.

Foto: A for-sale sign is posted outside a home in Sunnyvale, California. source Melia Robinson/Business Insider

In 2016, nearly one-third of people living in California put more than half their total income toward rent and utilities, according to a report by the California Budget & Policy Center.

Foto: Delmi Ruiz sits inside an RV where her family lives and sleeps in Mountain View, California. source Marcio Jose Sanchez/AP

Source: Los Angeles Times

Working-class wages don’t stretch far in a city like San Jose, where the median rent is $3,500 a month. Food service workers make a median wage of $12 an hour there.

Foto: Demonstrators gather in front of a McDonald’s restaurant to call for an increase in minimum wage in Chicago, Illinois. source Scott Olson / Getty Images

Source: AP

Living in a vehicle allows people to save up money that they would lose in rent.

Foto: Ellen Tara James-Penney, a lecturer at San Jose State University, prepares to stay the night inside her station wagon in a church parking lot in San Jose, California. source Marcio Jose Sanchez/AP

Benito Hernandez, who works as a landscaper and roofer, pays $1,000 a month to rent an RV that he shares with his pregnant wife and children. They live in Mountain View.

Foto: Delmi Ruiz, right, and her husband Benito Hernandez chat outside their RV where their family lives and sleeps in Mountain View, California. source Marcio Jose Sanchez/AP

The family was kicked out of their apartment two years ago, after the rent increased to nearly $3,000 a month. “After that, I lost everything,” Hernandez, 33, told the AP.

Foto: Delmi Ruiz Hernandez, 4, plays outside of an RV where her family lives and sleeps in Mountain View, California. source Marcio Jose Sanchez/AP

Source: AP

Despite her full-time job teaching English classes at San Jose State University, Ellen Tara James-Penney sleeps in a car she parks at a church that shelters homeless people.

Foto: Ellen Tara James-Penney, a lecturer at San Jose State University, speaks to her English class on the university’s campus in San Jose, California. source Marcio Jose Sanchez/AP

She eats her meals at the school’s dining hall and the church.

Foto: Ellen Tara James-Penney, a lecturer at San Jose State University, prays before receiving a meal at a church in San Jose, California. source Marcio Jose Sanchez/AP

At night, she grades papers and prepares lessons in her car by the light of a headlamp.

Foto: Ellen Tara James-Penney, a lecturer at San Jose State University, prepares her lesson plan inside the station wagon where she sleeps in San Jose, California. source Marcio Jose Sanchez/AP

During a lesson on John Steinbeck, a students said that she was tired of hearing about the homeless. “I said, ‘Watch your mouth. You’re looking at one.’ Then you could have heard a pin drop,” James-Penney told the AP. “It’s quite easy to judge when you have a house.”

Foto: Ellen Tara James-Penney, a lecturer at San Jose State University, talks with a student at the end of her English class on the university’s campus in San Jose, California. source Marcio Jose Sanchez/AP

Source: AP

Albert Brown III, a security officer, said his feet have been hurting him but he can’t afford to miss a shift. He recently signed a lease that he can barely afford on his $16-an-hour salary.

Foto: Albert Brown III, who works as a security officer, talks about living in homelessness in San Jose, California. source Marcio Jose Sanchez/AP

“It’s a sad choice. I have to decide whether to be homeless or penniless, right?” Brown told the AP. He previously lived in his car and is working overtime to pay for its pricey repair.

Foto: Albert Brown III, who works as a security officer, locks his bike in front of his workplace in San Carlos, California. source Marcio Jose Sanchez/AP

Source: AP

Tom Myers, executive director of Community Services Agency, a nonprofit based in Mountain View, told the AP that a “crisis of unemployment” is not to blame for the homelessness epidemic in Silicon Valley. “People are working,” he said.

Foto: Ellen Tara James-Penney, a lecturer at San Jose State University, fixes the collar on her husband Jim’s jacket at a church in San Jose, California. source Marcio Jose Sanchez/AP

Source: AP

But working does not mean living comfortable in the tech capital of the world.

Foto: A group of homeless people, including Ellen Tara James-Penney, a lecturer at San Jose State University, receive a meal at a church in San Jose, California. source Marcio Jose Sanchez/AP