Canada Post: Postal Code Lookup
Look up postal codes for any address in Canada. Also look up address ranges for given postal codes.

DirectMailQuotes LLC
Zip code directory lookup as well as postal rates, regulations, glossary of mailing terms.

Free ZIP Code Lookup
Free zipcode lookup with areacode, county, latitude, longitude, MSA, PMSA, congressional district, FIPS code, and timezone. Updated monthly.

Free ZIP Code Lookup
Free United States ZIP code lookup. Listing by zip codes or state names.

International Mailing Address Formats
Includes format information and/or examples for many countries, and links to additional references.

KJL Software, Inc.
Databases of US ZIP Code and Area Code information.

Links to Post Office Pages
Links and resources for postal code and international address and address format data.

National Address and ZIP+4 Browser
Interactively browse all address and ZIP+4 records in the United States.

Postage Rates Worldwide
Current postage rates, Domestic, Europe, USA, cards and letters, in over 60 countries

Postage rates worldwide
Directory of mail rates (domestic & international letter rates) with links to the rate calculators or rate tables of postal services in most countries of the world. email rate queries supported.

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