The United States Postal Service assigns ZIP codes according to the geographical location and delivery route of the postal address. This allows for mail to be routed to the service centers that handle the mail for those ... More »

Search for ZIP codes online by entering as much information as you can about an address or area into a ZIP code database. The database will return results for the ZIP code of that address or area. Many such databases exi... 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 »

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Look up address and ZIP codes on USPS.com by accessing the site's ZIP code search tool and entering the available information into the designated fields. The tool allows you to find the ZIP code associated with an addres... More »

To find Massachusetts ZIP codes, go to the United States Postal Service website and use the "Look Up a ZIP Code" tool on the website. There are about 700 different ZIP codes for the state of Massachusetts listed on the U... More »

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You can find ZIP codes on the United States Postal Service website at USPS.com. To search for a ZIP code on USPS.com, click on the Quick Tools section of the website and then choose Look Up a ZIP Code from the drop-down ... More »

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Find ZIP codes by entering the street address on the United States Postal Service website or at several ZIP code map sites, including UnitedStatesZIPCodes.org, MapsOfTheWorld.com and ZIP-Codes.com. Conversely, find ZIP c... More »

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