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 » Government & Politics Public Records

USPS zip code maps can be found by visiting the USPS website and inputting the street address, city and state. There is also an option to look up the zip code map by company or to view all of the cities within a particul... More »

The United States Postal Service has a ZIP code lookup link on its website, 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 » Government & Politics Public Records

Look up address and ZIP codes on 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 »

Find ZIP codes by entering the street address on the United States Postal Service website or at several ZIP code map sites, including, and Conversely, find ZIP c... More » Government & Politics Public Records

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 »

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 » Geography United States The West