Question: How long would it take to go from the numerically lowest ZIP code to the highest?
Answer: 3 days 4 hours of continuous travel (including a 662-mile ferry ride!)
The starting ZIP of 00501 is a special one given to the IRS. However, it turns out you can’t easily get to Nowhere, AK’s 99950, according to Google, so I had to settle for Ward Cove’s 99928:
