During the COVID-19 pandemic, you can apply over the phone at 800-772-1213, and some people can apply online. SSA can tell you if you qualify to do this.
From December 2020 through March 2021, SSA is mailing outreach notices to people who may be eligible for Supplemental Security Income (SSI) payments. SSA established a dedicated phone line with a team of specialized workers to help people who receive this notice. They are supposed to help callers find out if they can get SSI and help with SSI applications. SSA also has a separate phone number for people to call who need help in Spanish.