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Buffalo, New York Zip Codes 14201 14202 14203 14204 14205 14206 14207 14208 14210 14211 14212 14213 14214 14215 14216 14217 14219 14220 14221 14222 14223 14224 14225 14226 14228 14231 14233 14240 14241 14260 14261 14263 14265 14267 14269 14270 14272 14273 14276 14280 Prior to the use of zip codes, cities were divided into regions and mail was addressed as Buffalo 10, New York, 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 Buffalo's zip code is 1 it is located in the "1" zone that includes the following areas: Delaware, New York, and Pennsylvania.