An address is a collection of information, presented in a mostly fixed format, used for describing the location of a building, apartment, or other structure or a plot of land, generally using political boundaries and street names as references, along with other identifiers such as house or apartment numbers. Some addresses also contain special codes to aid routing of mail and packages, such as a ZIP code or post code.
Functions
Addresses have several functions:
- Providing a means of physically locating a building, especially in a city where there are many buildings and streets,
- Identifying buildings as the end points of a postal system,
- A social function: someone's address can have a profound effect on their social standing,
- As parameters in statistics collection, especially in census-taking or the insurance industry.
History
Until the advent of modern postal systems, most houses and buildings were not numbered. Streets may have been named for landmarks, such as a city gate or market, or for the professions of their inhabitants. In many cities in Asia, most minor streets were never named. This is still the case today in much of Japan. When postal systems were introduced, it became necessary to number buildings to aid in mail delivery.
Current addressing schemes
House numbering or naming
Main article: House numberingIn most English-speaking countries the standard is an alternating numbering scheme progressing in one direction along a street, with odd numbers on one side (usually west or south) and even numbers on the other (usually north or east), although there is significant variation on this basic pattern. Cities in North America, particularly those planned on a grid plan, often incorporate block numbers, quadrants (explained below), and cardinal directions into their street numbers, so that in many such cities, addresses roughly follow a Cartesian coordinate system. Some other cities around the world have their own schemes.
Although house numbering is the principal identification scheme in many parts of the world, it is also common for houses in the United Kingdom and Ireland to be identified by name, rather than number, especially in small towns. In these cases, the street name will usually follow the house name. A fictional example of such an address might read: "Smith Cottage, Frog Lane, Barchester, Barsetshire, BA9 9BA" or "Dunroamin, Emo, Co. Laois, Ireland".
Quadrants
In cities with Cartesian-coordinate-based addressing systems, the streets that form the north-south and east-west dividing lines constitute the x and y axes of a Cartesian coordinate plane and thus divide the city into quadrants. The quadrants are typically identified in the street names, although the manner of doing so varies from city to city. For example, in one city, all streets in the northeast quadrant may have "NE" prefixed or suffixed to their street names, while in another, the intersection of North Calvert Street and East 27th Street can be only in the northeast quadrant.
Street-naming conventions
Street names may follow a variety of themes. In many North American cities, such as, San Francisco USA, and Edmonton, Canada, streets are simply numbered sequentially across the street grid. Washington, D.C. has its numbered streets running north-south and lettered or alphabetically named streets running east-west, while diagonal avenues are typically named after states. In Salt Lake City, and many other Utah cities, streets are in a large grid and are numbered in increments of 100 based on their location relative to the center of the city in blocks. A similar system is in use in Detroit with the Mile Road System. In some housing developments in North America, streets may all follow the same theme (for example, bird species), or start with the same letter. Streets in Continental Europe and Latin America are usually named after famous people or auspicious dates.
Postal codes
Postal codes are a relatively recent development in addressing, designed to speed the sorting and processing of mail by assigning unique numeric or alphanumeric codes to each geographical locality.
Postal alternatives to physical addresses
For privacy and other purposes, postal services have made it possible to receive mail without revealing one's physical address or even having a fixed physical address. Examples are post office boxes and poste restante (general delivery).
Address format
In most of the world, addresses are written in order from most specific to general information, starting with the addressee and ending with the largest geographical unit. For example:
In English-speaking countries, the postal code usually comes last. In much of Europe, the code precedes the town name, thus: "1010 Lausanne". Often, the country code is still placed in front of the postal code: "CH-1010 Lausanne". However, this is no longer demanded by postal authorities.
If a house number is provided, it is written on the same line as the street name; a house name is written on the previous line. When addresses are written inline, line breaks are replaced by commas. Conventions on the placing of house numbers differ: either before or after the street name. Similarly, there are differences in the placement of postal codes: in the UK, they are written on a separate line at the end of the address; in Australia, Canada and the United States, they usually appear immediately after the state or province, on the same line; in Austria, Belgium, Germany and The Netherlands they appear before the city, on the same line.
East Asian addressing systems, including Chinese, Japanese and Korean addressing systems, when written in their native scripts, use the opposite ordering, starting with the province/prefecture, ending with the addressee. However both have the same order as western countries when written in the Latin alphabet. The Hungarian system also goes from large to small units, except the name of the addressee is put into the first line.
The Universal Postal Convention strongly recommends the following:
Mailing address format by country
Argentina
In Argentina, an address must be mailed this way:
The postal code has been changed from a 4 digits format to a 8 digits format, which is showed at the example. The new format adds a district or province letter code at the beginning that allows to identify it. As the system has been recently changed the 4 digits format still can be found or used, in that case is needed to add an explicit reference regarding the province or district intended to reach.
Australia
In common with the English-speaking world, addresses in Australia put the street number—which may be a range—before the street name, and the placename before the postcode. Unlike addresses in most other comparable places, the city is not included in the address, but rather a much more fine-grained locality is used, usually referred to in Australia as a suburb or town is — although these words are understood in a different way than in other countries. Because the suburb or town serves to locate the street or delivery type, the postcode serves only as routing information rather than to distinguish previous other parts of an address. As an example, there are around 8000 localities in Victoria (cf. List of localities in Victoria (Australia) and List of Melbourne suburbs), yet around 700 unique geographic postcodes. For certain large volume receivers or post offices, the "locality" may be an institution or street name. It is always considered incorrect to include the city or metropolis name in an address (unless this happens to be the name of the suburb), and doing so may delay delivery.
Australia Post recommends that the whole address should be set in capital letters. In Australia, subunits are essential and should be separated from the street by two spaces; apartments, flats and units are typically separated with a forward slash instead. As in the US, the state/territory is crucial information as many placenames are reused in different states/territories; it is usually separated from the suburb with two spaces and abbreviated. In printed matter, the postcode follows after two spaces; in handwritten matter, the postcode should be written in the boxes provided.
In addition to PO Boxes, other delivery types (which are typically abbreviated) may include:
Belgium
The address can be written in Dutch or in French. When unsure of the recipient's language, it can be better to write it in both languages.
Brazil
In Brazil, an address must be mailed this way:
Canada
Canada uses a similar system to the United States (below), but there are key differences.
- Only Canada Post can deliver to a P.O. Box. For this reason, the recipient may choose to insert their physical (also known as street) address as line two, expanding the complete address to four lines. Providing both allows a sender to ship via the Canada Post or via a private carrier. Some locations have special drop-off points for couriers, like a convenience store (for items delivered from certain stores such as Sears or other departments) envelopes are delivered to a separate building;
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