The Imperial Valley does have middle-class residents, many of whom work in government and law enforcement. U.S. Customs and Border Protection, which patrols 71 miles of the Mexican border nearby, is a big local employer.
Two state prisons are also located nearby and the valley was delighted to get them, says El Centro City Council member Cheryl Viegas-Walker.
"When everybody else was saying, 'Not in my backyard,' the whole NIMBY thing, 'Don't dare site those prisons here,' we were like, 'Please. Bring them here. Bring the jobs here,' " she says.
Viegas-Walker herself came to El Centro as a young woman after her husband took a job at a local law firm. At first, she was less than thrilled to live in the valley. Today, she says she has become its biggest cheerleader.
She likes the small town feel of the city, the fact that she can drive to work in six minutes. Unlike most of California, El Centro is also affordable: A nice house on a palm tree-lined street in the better part of town can be had for about $200,000.
Like Viegas-Walker, many local officials argue that the unemployment rate is lower than the Labor Department claims and is skewed by the large number of seasonal workers in the area, many of them coming from the much larger city of Mexicali, Mexico, next door.
City officials also say their efforts to lure new businesses have been hurt by California's comparatively high minimum wage, which they say has driven some jobs into Arizona and even Mexico.
But no one disputes that there aren't enough good jobs.
"It's one thing to have a job. It's another thing to have a job that pays a [good] wage and has some upward mobility, and certainly that's where [the Imperial Valley] economy continues to fall short," says Mike Bracken, chief economist at Development Management Group, which advises local businesses and communities on development.
Viegas-Walker acknowledges that people with college degrees tend to leave El Centro for greener pastures. She knows that firsthand: Her own two grown sons now live in Oregon and New York.
"We do have a brain drain. I mean, my two sons will not return to the valley. They won't come back," Viegas-Walker says.
Many of those who remain have few options for work. In the United States, the poverty rate was 12.3% in 2017. In El Centro, it was more than twice that.
"Our economy is not diversified. It's a very narrow economy. It's either farm or government or teaching or low-income, with a few other exceptions," says Sara Griffen, executive director of the Imperial Valley Food Bank.
A few years ago, Jessica Solorio, who grew up in El Centro, noticed a growing number of homeless people gathering in a local park. She decided to cook up a meal of chicken teriyaki and rice and take it to them. It soon became a regular thing.
"Me and my friend fed the homeless one night, and we posted on Facebook, then we asked who was going to take the next night. And from there we've just been feeding the homeless every night," she says.
Today she heads Spread the Love, a drop-in center where homeless people can spend their afternoons sleeping on cots or just sitting in the air conditioning.
Among those stopping by is Henry Lee Poston, who says he has spent much of his life in prison or on the streets. Raised in Oklahoma, he's never gotten used to the heat in the valley. It makes being homeless that much harder.
"One thing is it's too dang hot here," says Poston. "I have blackouts because of the heat. And there's nothing I can do about it."
Poston has been looking for work in the valley for a long time with no success.
"I've tried and tried and tried and tried," he says wearily. "They keep telling me the same thing. 'You're not socially acceptable.' Whatever the hell that means."
If he ever does get a job, he has one goal: To leave the valley and return home to Oklahoma.
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