Featured Resources
- Reference USA
- Search a database of 14 million U.S. Businesses (updated monthly) or a residential listing database of nearly 140 Million U.S. Households. Available at Thrall and to Thrall members at home.
- Zip Code Lookup
- Search by address, city, company or zip code. From the United States Postal Service.
Web Resources
- Canadian Zip Codes
- Contacting the Congress
- "A database of biographical information, phone numbers, FAX numbers, office addresses, electronic mail addresses and WWW homepages for members of the Congress and Congressional Committees."
- Langenberg.com: Zip Codes
- Includes: Distance Between Two Zip Codes, Surrounding Zip Codes, City to Zip Codes Cross References, Zip Code Boundary Maps, and more.
- Official USPS Abbreviations
- From the United States Postal Service.
- US Zip Codes in One Step
- Enter a city and state with the street optional.
