<P> House numbering is the system of giving a unique number to each building in a street or area, with the intention of making it easier to locate a particular building . The house number is often part of a postal address . The term describes the number of any building (residential or not) with a mailbox, or even a vacant lot . </P> <P> House numbering schemes vary by location, and in many cases even within cities . In some areas of the world, including many remote areas, houses are named but are not assigned numbers . </P>

What is the house number in an address
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