He and thousands of others have received mail here for years. They use the address for job applications, for medication, to receive benefits like food stamp cards and even to vote. And for 20 years, the U.S. Postal Service provided at least 20% of the mail room’s budget.

But last month, the postal service ended its support of $24,000 a year because a nearby post office is “able to fully serve the community,” a spokesperson said in a statement to ProPublica.

Unlike a standard post office, Keys to Change allows people to receive mail without a government ID, a common problem for some who are homeless.