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Reverse Address Geocoding Webservice

Find nearest Address
Finds the nearest street and address for a given lat/lng pair.

Url : api.geonames.org/address?
Parameters : lat,lng; radius in km (default=0.2); maxRows (default=1)
Restriction : this webservice is only available for selected countries, see list below.
Result : returns the nearest address for the given latitude/longitude.
Example http://api.geonames.org/address?lat=52.358&lng=4.881&username=demo

This service is also available in JSON format :
http://api.geonames.org/addressJSON?lat=52.358&lng=4.881&username=demo


Address Geocoding Webservice

Find lat/lng for Address
Returns the location lat/lng for a given address.

Url : api.geonames.org/geoCodeAddress?
Parameters : q (query term, url encoded)
Restriction : this webservice is only available for selected countries, see list below.
Result : returns the nearest address for the given latitude/longitude.
Example http://api.geonames.org/geoCodeAddress?q=Museumplein+6+amsterdam&username=demo

This service is also available in JSON format :
http://api.geonames.org/geoCodeAddressJSON?q=Museumplein+6+amsterdam&username=demo


Supported Countries

CCCountrynum Addr/StreetsData Providers
1ATAustria2364528National Address Register
2AUAustralia14448013National Address Register
3AXĂ…land31265National Address Register
4CCCocos [Keeling] Islands418National Address Register
5CHSwitzerland2129960National Address Register
6CXChristmas Island2163National Address Register
7DKDenmark2465482National Address Register
8FIFinland3488721National Address Register
9ISIceland115659National Address Register
10LULuxembourg161743National Address Register
11NFNorfolk Island1465National Address Register
12NLNetherlands8914297National Address Register
13NONorway2441279National Address Register
14PLPoland7484070National Address Register
15PRPuerto Rico491451US Census, street segments
16SJSvalbard and Jan Mayen776National Address Register
17USUnited States67577576US Census, street segments