Geocode
A
geocode is a
geographical code to identify a point or area at the
surface of the
earth.
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
Some of these code systems are free for use, others have different
licences.
*Car
License plates
*
FIPS country codes (FIPS 10-4), area code, administrative, free
*
FIPS place codes (FIPS 55)
U.S. 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
*
Georef, a military / air naviation co-ordinate system for point and area identification
*
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 3166 country and subdivision codes
*
ITU-R country codes
*
ITU-T country calling codes
*
ITU-T mobile calling codes
*MapDot Protocol: world locations coded into a zone sequence[
1], free
*
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 [
2]
*
UN/LOCODE, area, administrative, cities
*
UTM*
WMO*
Geocoding*
GIS* http://geonames.usgs.gov/index.html
* http://www.nima.mil/gns/html/index.html
