New York City had the most zip codes in the top 10 of Forbes' annual list of "America's Most Expensive Zip Codes.". The city had six zip codes in the top 10 that cut across such tony neighborhoods as SoHo, Chelsea and the Meatpacking District.What is the lowest ZIP code in the United States?
The lowest in-use zip code is 00501 and it belongs to the IRS mail processing center located in Holtsville, New York. Conversely, the highest in-use zip code, 99950, belongs to the city of Ketchikan, Alaska.How do I Find my ZIP code?
To find a zip code with USPS.com, you need to fill in the fields with your USA street address, city, and state. Then click Find and you’ll get your postal code. There is also a tab to get zip code for a company.What are US Postal ZIP codes?
ZIP Codes are numbered with its first digit denoting a certain group of U.S. states, the second and third digits together representing a region in that particular group (or maybe a large city) and the fourth and fifth digits denoting a group of delivery addresses that are within that region.