Nowadays, people don't send letters to one another when they want to catch up. You may get holiday or birthday cards from your parents, grandparents or other family members and friends, but for the ...

Got a problem with an Excel spreadsheet. I have a non-specific data column in an Excel 2007 spreadsheet. The data in one column is zip codes in the form of both zip (5 digit, 00000) and zip+4 (10 ...

Pro tip: Make sure the zip code is correct. The wrong zip code can get your item stuck in the system.

Today marks the 50th anniversary of the Zone Improvement Plan, the network of ZIP codes we use for everything from mail delivery to credit card security. The U.S. Postal Service began using the ...