The United States Postal Service provides a ZIP code reference tool on its web site, USPS.com. This tool allows consumers to look up ZIP codes for residential and commercial addresses and provides a list of cities locate... More »

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Perform a ZIP+4 code lookup by entering the full address into the United States Post Office’s Look Up a ZIP Code tool. The tool also allows entering a ZIP+4 code into the box to find an address in standard USPS formattin... More »

The U.S. Postal Service provides lists of ZIP codes for Portland and areas throughout the country; they are available, as a list or by address, via the ZIP code lookup tool on the USPS website. There are 56 ZIP codes use... More »

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The United States Postal Service has a ZIP code lookup link on its website, USPS.com. The site has tools to find a specific ZIP code for an address and a reverse lookup to find all cities with a certain ZIP code. More »

www.reference.com Government & Politics Public Records

As of 2015, you can find the nine-digit ZIP code of an address on the United States Postal Service's website, USPS.com. UnitedStatesZIPCodes.org also features a nine-digit ZIP code look up tool. More »

www.reference.com Government & Politics Public Records

The United States Postal Service provides a ZIP code finder on its official website, USPS.com. The finder requires a street address, city and state to find a ZIP code. More »

www.reference.com Geography United States

An easy way to find a nine-digit ZIP code is to go to USPS.com and search for the desired address in the Look Up a ZIP Code tool. The link for this tool can be found in the Quick Tools menu on the left. More »