More than half a million Americans were homeless in 2015. Homelessness is actually down across the country, but the problem is surging in cities like New York and Los Angeles, where housing costs are skyrocketing, pushing low-income residents out of their homes. Though the word homeless may evoke the image of a man sleeping on the sidewalk or in a train station, most homeless people live in shelters or other transitional housing. More than a third are families with children.