Address formats—address fields, address-field lengths, and address-field order—vary from country to country. In Japan, addresses are written in order by country, city, street, then addressee. In Ireland and the United Kingdom, addresses include the county and are in order by addressee, street, city, county, then country.

Address formats might also include miscellaneous information like building names or names of regions within a city. The number of fields and the number of characters within each field must be considered. A small address format in one language edition might require more space in another language edition. The use of titles to address someone varies also.