The population of sheltered homeless seniors, age 62 and older, in the  U.S. population rose from 2.9 percent to 4.7  percent from 2007 to 2016. That’s according to the United States Department of Housing and Urban Development. In some parts of the country, like Central Florida, senior citizens make up about 10 percent of the homeless population. And because there’s an affordable housing crunch, some homeless seniors are now living out of their cars.