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They’re zip codes.
by op00to 5y ago
They’re zip codes.
- Ichthypresbyter 5y agoOr the first 3 digits, which denote which facility mail addressed to that zip code is sorted at. The default when you open the page is an interesting one- "005 MID-ISLAND NY". Almost all New York zip codes start with a 1, but the Mid-Island facility in Melville, which serves codes beginning 117, 118 and 119, also sorts mail addressed to the IRS processing center in Holtsville with the zip code 00501- which happens to be the lowest zip code in current use.
- p1mrx 5y agoWhich came first, the IRS facility or the zip code?
- jonathanoliver 5y agoI believe the IRS facility in Holtsville existed first. Then, due to mail volume, a ZIP Code was created to facilitate routing of letters.