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Atlanta, Georgia Zip Codes 30301 30302 30303 30304 30305 30306 30307 30308 30309 30310 30311 30312 30313 30314 30315 30316 30317 30318 30319 30320 30322 30324 30325 30326 30327 30328 30329 30330 30331 30332 30333 30334 30336 30337 30338 30339 30340 30341 30342 30343 30345 30346 30347 30348 30349 30350 30353 30354 30355 30356 30357 30358 30359 30360 30361 30362 30364 30366 30368 30369 30371 30374 30375 30376 30377 30378 30379 30380 30384 30385 30386 30387 30388 30389 30390 30392 30394 30396 30398 30399 31107 31119 31126 31131 31132 31139 31141 31145 31146 31150 31156 31191 31192 31193 31195 31196 31197 31198 31199 39901 Prior to the use of zip codes, cities were divided into regions and mail was addressed as Atlanta 10, Georgia, 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 Atlanta's zip code is 3 it is located in the "3" zone that includes the following areas: Alabama, Florida, Georgia, Mississippi, and Tennessee.