A geocode is a geographical code to identify a point or area at the surface of the earth. Modern geography is a diverse discipline that draws influence from almost every other arena of knowledge. ... CODE is a visual programming language and system for parallel programming, letting users compose sequential programs into parallel ones. ... An open surface with X-, Y-, and Z-contours shown. ... Earth, also known as Terra, and (mostly in the 19th century) Tellus, is the third-closest planet to the Sun. ...

The code systems can be described by:

• how the area is coded (number, letter, mixture of both, other)
• which part of the earth is covered (whole earth, land, water, a continent, a country)
• what kind of area or location is coded (country, county, airport, railstation, city, ...)
• whether an area or a point is coded
• time for which the code is valid

List of some code systems

Some of these code systems are free for use, others have different licences. A license or licence is a document or agreement giving permission to do something. ...

• Car License plates
• FIPS country codes (FIPS 10-4), area code, administrative, free
• FIPS place codes (FIPS 55) US only, free
• FIPS county codes (FIPS 6-4) US only, free
• FIPS state codes (FIPS 5-2) US only, free
• Geographic coordinate system with longitude / latitude, point system, with span it is an area system, free
• IATA airport codes, area /point codes, airports
• ICAO airport codes, area /point codes, airports
• IANA country codes similar to ISO 3166-1 alpha-2
• IOC country codes, area, worldwide
• ISO country codes area code, administrative ISO 3166-1 alpha-2 free
• ISO 3166-2 area code, administrative, subcountry
• ITU-R country codes
• ITU-T country calling codes
• ITU-T mobile calling codes
• MARC country codes
• NAC, area codes (area can be indefinitely small)
• NUTS area code, partially administrative, worldwide: countries, europe : country to community
• ONS code, UK only, administrative
• Postal codes, area, worldwide, country-codes by UPU, free
• UN code: http://unstats.un.org/unsd/methods/m49/m49regin.htm, area code, continents, countries (like ISO 3166-1 numeric)
• SALB (Second Administrative Level Boundaries), by UN [1]
• UN/LOCODE, area, administrative, cities
• UTM
• WMO

// Introduction A license plate, number plate or registration plate (often referred to simply as a plate, or colloquially tag) is a small metal or plastic plate attached to a motor vehicle for official identification purposes. ... Federal Information Processing Standard (FIPS) two-letter country codes (FIPS 10-4) are used by the US Government for data processing, and in the CIA World Factbook. ... FIPS place codes are a U.S. Federal Information Processing Standard for geographic coding of human settlements in the United States. ... Wikiquote has a collection of quotations by or about: United States Wikinews has news related to this article: United States United States government CIA World Factbook Entry for United States House. ... FIPS county codes are a Federal Information Processing Standard for five-digit codes used to uniquely identify counties and county equivalents in the United States, certain U.S. possessions, and certain freely associated states. ... A two-digit Federal Information Processing Standard (FIPS) code (FIPS 5-2) uniquely identifies a state, territory, or commonwealth within or of the U.S.. These codes are used by the U.S. Census Bureau, by the Department of Agriculture to form milk-processing plant numbers, and in the Emergency... Map of Earth showing lines of latitude (horizontally) and longitude (vertically); large version (pdf) The geographic (earth-mapping) coordinate system expresses every horizontal position on Earth by two of the three coordinates of a spherical coordinate system which is aligned with the spin axis of the Earth. ... Map of Earth showing lines of longitude, which appear curved and vertical in this projection, but are actually halves of great circles Longitude, sometimes denoted by the Greek letter λ, describes the location of a place on Earth east or west of a north-south line called the Prime Meridian. ... Latitude, sometimes denoted by the Greek letter φ, gives the location of a place on Earth north or south of the Equator. ... An IATA airport code, known by the IATA as an IATA location identifier or, simply, a location identifier [1], is a three-letter alphabetic code designating many airports around the world. ... The ICAO airport code is a four-letter alphanumeric code designating each airport around the world. ... A top-level domain (TLD) is the last part of which Internet domain names consist of. ... ISO 3166-1 alpha-2 codes are the best known part of ISO 3166-1 and subsequent use as most of the country codes for Internet domain names (see also External Links below). ... The International Olympic Committee (IOC) allocates three-letter country codes to all National Olympic Committees and other groups competing in the Olympic Games. ... ISO country code can refer to ISO 3166-1 for countries that currently exist ISO 3166-1 alpha-2 ISO 3166-1 alpha-3 ISO 3166-1 numeric ISO 3166-3 for countries that do not exist anymore Generally, its the two letter country code of ISO 3166-1... ISO 3166-1 alpha-2 codes are the best known part of ISO 3166-1 and subsequent use as most of the country codes for Internet domain names (see also External Links below). ... ISO 3166-2 is the second part of the ISO 3166 standard. ... The radiocommunication division of the International Telecommunication Union uses the following letter codes to identify its member countries. ... This is a list of country calling codes, also known as international direct dialing (IDD) codes, which are needed to access international telephone services. ... This is a list of Mobile Country Codes (MCCs) defined in ITU E.212 (Land Mobile Numbering Plan) for use in identifying mobile stations in wireless telephone networks, particularly GSM. The MCC is part of the International Mobile Subscriber Identity (IMSI) number, which uniquely identifies a particular subscriber, and is... MARC is an acronym for MAchine-Readable Cataloging. ... The Natural Area Code is a proprietary geocode system for identifying an area anywhere on the Earth, or a volume anywhere in the universe. ... The Nomenclature of Territorial Units for Statistics (NUTS) is a geocode standard for referencing the administrative division of countries for statistical purposes. ... The Office for National Statistics coding system is a hierarchical code used in the United Kingdom for tabulating census and other statistical data. ... A postal code is a series of letters and/or digits appended to a postal address for the purpose of sorting mail. ... The Universal Postal Union (UPU) is a international organization that coordinates postal policies between member nations, and hence the world-wide postal system. ... ISO 3166-1 numeric-3 is a set of 3-digit codes to represent the names of countries and dependent areas. ... UN/LOCODE is a geographic coding scheme developed and maintained by United Nations Economic Commission for Europe, a unit of the United Nations. ... A transverse Mercator projection is a map projection similar to the Mercator projection in that it is a projection of Earth on a tangent cylinder by rays radial with respect to the cylinder. ... The World Meteorological Organization (WMO) is an intergovernmental organization with a membership of 187 Member States and Territories. ...

See also

• Geocoding
• GIS