SSNs are not (yet) reused. There's ~900 million potential SSNs, we've run through half, and are using ~5.5 million a year, which gives us at least another half

SSNs are not (yet) reused. There's ~900 million potential SSNs, we've run through half, and are using ~5.5 million a year, which gives us at least another half a century before we have to start reusing.