The monthly mean minimum and maximum temperatures over the year in Stockholm, Sweden. Show the average temperatures in Stockholm in Celsius Â» Data from nearest weather station: Stockholm, Sweden (0.0 Miles).
The postal service started the use of postal zones for large cities in 1943. By the early 1960s a more general system was needed. On July 1, 1963, ZIP codes were created for the whole country but they were not mandatory. In 1967, these were made mandatory for many types of mail. The system was soon used for all mail.
Mr. Zip - A cartoon character, created by Harold Wilcox of the Cunningham and Walsh advertising company, used by USPS in the 1960s and '70s to promote the ZIP Code system. Secret - The President and his family have their own, private ZIP Code that is not publicly known. 1  History of Post Office Technology. 2  Two Letter US State and Possession Postal Service Abbreviations. 3  Free Downloadable ZIP Codes Database for Microsoft Access. 4  Mail Delivery Could be Even Slower Than USPS Admits, GAO Finds.