: While "38" targets Hyde Park, adding the "9" pushes it into a 6-digit territory used internationally, but not in the standard U.S. 5-digit format.
If you break the sequence down into the standard 5-digit format, you find two very different neighbors in : 125389 zip
Table_title: Zip Code List Zip Code - 125 in New York Table_content: header: | Zip Code | City | County | row: | Zip Code: 12501 | List of ZIP Code prefixes - Simple Wikipedia : While "38" targets Hyde Park, adding the