Numbered streets originated in the United States in Philadelphia by Thomas Holme who laid out the original plan for the city in 1683. In many North American cities, such as San Francisco, USA, and Edmonton, Alberta and Vancouver, British Columbia, streets are simply numbered sequentially across the street grid. ![]() Street names may follow a variety of themes. 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. The quadrants are typically identified in the street names, although the manner of doing so varies from city to city. 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. Such an address might read: "Smith Cottage, Frog Lane, Barchester, Barsetshire, BZ9 9BA" or "Dunroamin, Emo, Co. In these cases, the street name will usually follow the house name. Some other cities around the world have their own schemes.Īlthough 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 villages. 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. ![]() Many older towns and cities in the UK have "up and down" numbering where the numbers progress sequentially along one side of the road, and then sequentially back down the other side. ![]() In most English-speaking countries, the usual method of house numbering is an alternating numbering scheme progressing in each direction along a street, with odd numbers on one side (often west or south or the left-hand side leading away from a main road) and even numbers on the other side, although there is significant variation on this basic pattern.
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