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Fort Worth, Texas Zip Codes 76101 76102 76103 76104 76105 76106 76107 76108 76109 76110 76111 76113 76114 76115 76116 76117 76118 76119 76120 76121 76122 76123 76126 76129 76130 76131 76132 76133 76134 76135 76136 76137 76140 76148 76150 76155 76161 76162 76163 76164 76177 76178 76179 76180 76182 76185 76191 76192 76193 76195 76196 76197 76198 76199 Prior to the use of zip codes, cities were divided into regions and mail was addressed as Fort Worth 10, Texas, 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 Fort Worth's zip code is 7 it is located in the "7" zone that includes the following areas: Arkansas, Louisiana, Oklahoma, and Texas.