|
|
| Oakland, California Zip Codes | 94601
94602
94603
94604
94605
94606
| 94608
94609
94610
94611
94612
94613
| 94615
94617
94618
94619
94620
94621
| 94623
94624
94625
94626
94627
94643
| 94659
94660
94661
94662
94666
|
Prior to the use of zip codes, cities were divided into regions and mail was addressed as Oakland 10, California, for example, to show which region of the city the mail was intended for. As cities continued to grow this system was not sufficient and was replaced by the Zip Code. ZipCodes went into effect in 1963. The United States Postal Service (USPS) initially used a cartoon character Mr. Zip to promote the use of zip codes. In 1983 the zipcode added the last four digits in an attempt to more narrowly define an address.
The first three digits of a zip code indicate the sectional center facility which will ultimately sort and distribute that piece of mail. All mail to that 5 digit zipcode will first arrive at the sectional center facility then after sorting continue along to its exact destination.
Since the first digit of Oakland's zip code is 9 it is located in the "9" zone that includes the following areas: Alaska, American Samoa, California, Guam, Hawaii, Marshall Islands, Federated States of Micronesia, Northern Mariana Islands, Oregon, Palau, Washington, Army Post Office Pacific, and Fleet Post Office Pacific . | |
|
|
