Zip codes: 42,000 There are nearly 42,000 zip codes spread across in America, each of which routes mail to its appropriate destination. The numbers range from 00501 (the lowest one for the Internal Revenue Service in Holtsville, New York) to 99950 (the highest one in Ketchikan, Alaska)....
Zip codes: 42,000 mikeledray // Shutterstock Zip codes: 42,000 There arenearly 42,000 zip codesspread across in America, each of which routes mail to its appropriate destination. The numbers range from 00501 (the lowest one for the Internal Revenue Service in Holtsville, New York) to 999...