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| Seattle, Washington Zip Codes | 98101 98102 98103 98104 98105 98106 98107 98108 98109 98110 98111
| 98114 98115 98116 98117 98118 98119 98121 98122 98124 98125 98126
| 98131 98132 98133 98134 98136 98138 98144 98145 98146 98148 98151
| 98155 98158 98160 98161 98164 98166 98168 98170 98171 98174 98177
| 98181 98184 98185 98188 98190 98191 98195 98198 98199
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Prior to the use of zip codes, cities were divided into regions and mail was addressed as Seattle 10, Washington, 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 Seattle'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 . | |
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