Use this free service to search for ZIP and area codes as well as locate the ZIP and area code for a city.

Software provider features its ZIP code and dealer-locater programs, which include marketing applications for tracking customers and phone calls.

Rewrites addresses in the proper format, including the ZIP+4 code. From SUNY Buffalo's Ctr of Excellence for Document Analysis and Recognition.

Find postal standards, systems and codes worldwide. Includes postal-code and address patterns.

Learn how to purchase data files that include international ZIP and area codes. Find longitude and latitude coordinates for various locations.

Find the distance between particular ZIP codes, check the boundary maps and use the post office locator and address formatter.

Discover a directory of links to official post office sites for a variety of countries. Includes rate calculators and express delivery companies.

Look for an address in the United States by entering appropriate search terms.

Simple utility looks up full or partial five-digit zip codes. Visitors can also search for zips by county, city, or area code.

Get ZIP, area and county codes. Also find latitudes and longitudes, time zones and congressional districts.