Zip Express allows easy look up of Zip Code, city, state, county,
Area Code and time zone by entering a Zip Code, Area Code, city,
state or county.

Zip Express' power goes well beyond this by providing the
capability to actually read a Zip Code from your application (or
clipboard) and paste the information directly into your program
(or clipboard) in just about any format that you desire.

Zip Express allows you to search by zip code, city, county, state
or area code. As you begin to key in your search criteria,
potential matches will be displayed allowing you to watch the
possibilities be narrowed down as you type.

Select just the data that you want to be displayed. For example,
if you are not interested in knowing the county or time zone, then
simply choose not to view them.

The current time for a given area code, zip code or a city in
another country can be displayed, allowing you to determine
whether you can place a phone call within normal business hours.

Large groups of data can be displayed at once and can easily be
printed or copied to the clipboard in almost any format you care
to create.

View the country and city codes needed to call from within the
U.S. to a city in another country.

http://www.getzips.com/index.htm