Address formats
How to write an international mailing address
Keep the recipient, delivery details and destination easy to distinguish.
Read guidePOSTAL CODES. CLEAR ADDRESSES.
Paste an Address. Get the Postal Code.
Find postal codes and format addresses for international mail.
Choose a countryReturn to the address input
Postal code results
ExampleIllustrative result only. Enter an address or ZIP Code to run a search.
Find your location step by step
Choose from locations in the available postal data. Your original address stays unchanged.
Your original address
What can I search here?
Choose a country to see its lookup guidance.
This country has partial coverage. A missing result does not mean the address or postal code is invalid.
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INTERNATIONAL MAILING FORMAT
Write it right. Send with confidence.
Arrange your address for its destination. A little clarity goes a long way.
JAPAN 70〰
RECIPIENT NAME
STREET AND NUMBER
CITY, POSTAL CODE
JAPAN
STREET AND NUMBER
CITY, POSTAL CODE
JAPAN
- Recipient name
- Street and number
- City / locality · Postal code
- Country
Explore by country
Postal codes, address formats and local mailing guides.
Useful tools for every address
Search ZIP Codes, match addresses and explore U.S. geographic and demographic data.
These map, distance and address-matching tools currently support the United States.
Address matching
Match a U.S. street address with the Census Geocoder.
ZIP Code lookup
Find a ZIP Code and see its locality, source and geographic information.
Mailing Address Format
Arrange address details for international mail.
Nearby postal codes
Find ZIP areas near a geographic point.
Distance calculator
Calculate straight-line distance between ZIP-area reference points.
ZIP Code map
Explore available ZIP reference points and Census ZCTA boundaries.
Check several postal codes
Choose a country and paste up to 20 postal codes, one per line. Leading zeros are preserved. This checks the available postal data, not street addresses.
My address cards
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Popular cities & postal areas
Browse local codes and explore the places behind them.
Postal code & mailing guides
Practical answers for finding codes and sending mail.
Postal basics
ZIP code vs postal code: what is the difference?
Understand the terminology before completing an international address form.
Read guideCountry guides
Sending mail to Japan: an address guide
Keep the postcode, locality and building details together.
Read guide
Country guides
Understanding Taiwan’s 3+3 postal codes
A three-digit district code is not a complete six-digit delivery code.
Read guide
Address formats
Finding the right postcode for a UK address
An outward postcode is useful for exploration, but is not the whole address code.
Read guide
Postal basics
Why one city can have several postal codes
Postal areas and administrative boundaries answer different questions.
Read guideA little clarity before you send.
Start with a destination country and a complete address. A city can contain many postal areas, so a city match is a starting point—not confirmation of a building’s postal code.
Postal systems and address formats vary by country. Our guides explain the differences and link to the original sources.
Explore postal code basicsFrequently asked questions
What is a postal code?
A series of letters or numbers used in a postal addressing system. Its format and coverage depend on the country.
Can I search with a complete address?
Yes. We look for a matching code or locality in the available data. Results are area-level candidates, not verification of a street address.
Can a city have more than one postal code?
Yes. Large cities commonly contain many postal areas. Use the full address to narrow your search.
How do I format an international address?
Choose the destination in the address formatter, enter the recipient and address details, then review and copy the label.
Where does the data come from?
Postal-code data comes from GeoNames, Posti, La Poste and swisstopo; Taiwan uses Chunghwa Post district data. The sources page lists each dataset’s coverage, retrieval date and limits.