It's normal for millennials to still live at home these days. But what if you're a millennial who doesn't have a home to go back to?

Growing up, Alkeisha Porter says, she didn't like her mom's husband, and her dad had a drug problem. So at 16, she moved out and became homeless.

"I was basically just house-hopping from friends to some family members. Hey, it was comfortable to me. It wasn't cold. I wasn't sleeping outside," says Porter, now 23.

Young people — 18- to 24-year-olds — make up one of thefastest-growing homeless populations in the country. In many big cities, like New York, Los Angeles and San Francisco, where housing is at a premium, finding affordable housing is especially hard.

[For more of this story, written by Kasey Saeturn, go to http://www.npr.org/2016/03/21/...at-helps-millennials]