The Mountain View warehouse is massive, but even "smaller" offices like NYC, which is not that small, have been screening mail for years. It's not just a securi

The Mountain View warehouse is massive, but even "smaller" offices like NYC, which is not that small, have been screening mail for years. It's not just a security measure: employees can relocate from one building to another at any time, so it's just easier for the company to do the final routing. Some places like the headquarters for Walmart and Mayo Clinic also get their own ZIP code.