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Vokabular: Nominatim

OpenStreetMap tool for address geocoding and reverse geocoding

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Basic information

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(P34)?Naming:	Nominatim
(P1266)?Abbreviation:	NOMINATIM
(P724)?Digest:	Nominatim is a search engine for OpenStreetMap data. You may search for a name or address (forward search) or look up data by its geographic coordinate (reverse search). Each result comes with a link to a details page where you can inspect what data about the object is saved in the database and investigate how the address of the object has been computed. Nominatim can power the search box on your website, allowing your users to type free-form queries (“Cafe Paris, New York”) in any language. It also offers a structured query mode (“postcode=12345”, “city=London”, “type=cafe”) that helps you to automate geocoding of extensive address lists.Given a latitude and longitude anywhere on the planet, Nominatim can find the nearest address. It can do the same for any OSM object given its ID.You can decide which features of OpenStreetMap are important to you. Nominatim imports only what you tell it to.OpenStreetMap data is constantly improved by thousands of editors. Keep up to date with these changes through minutely updates.
(P887)?URL:	https://nominatim.openstreetmap.org/ui/search.html
(P121)?Genre classification:	Word lists and category systems
(P15)?Medientyp:	Online resource
(P608)?Field of knowledge:	Geographic coordinates, Geography, history of a human settlement, topography
(P936)?Object types:	Locality, Mountain, River, Territorial entity, Lake, Building, Sea, Body of water, administrative territorial entity, administrative region, territory, Dwelling place
(P984)?Object type properties:	Datatio, Geographic coordinates, German municipality key, Name, Name variant, Population, Time zone, Translation, Type of locality, Web page

Number of integrated items

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(P613)?Number of integrated items:	9.000.000 Standard designation(s)

Contact

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(P845)?Creator:	Sarah Hoffmann
(P518)?Technically realized by:	Open Street Map
(P206)?Publisher:	Open Street Map
(P153)?Postal address:	Sarah Hoffmann | Bayreuther Str. 29 | 01187 Dresden | Germany
(P722)?Email address:	mailto:nominatim@lonvia.de

Methodology

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(P280)?Variant:	Data curation, Identification and matching, Translation, georeferencing
(P575)?Design features:	Simple list of terms without definitions
(P902)?Methodology:	Based on current technical terms
(P15)?Media type:	Online resource
(P1000)?Organisational structure:	Changes can only be made by registered users
(P999)?Sustainability:	The project is supported by a larger community in the medium term
(P942)?Number of hierarchy levels:	—
(P900)?Completeness:	Open for growth, completeness cannot be achieved

Version

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(P18)?Language:	English
(P1152)?Date of first publication:	2015
(P222)?Date of publication:	2025
(P939)?Versioning:	The work is available in individually designated versions, Versioning takes place at the level of all individual components/items

Cross concordances

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(P898)?External matching:	Wikidata - Grad: Applies (overall) - Sprache: English
(P573)?Target group:	Citizen Science, Research project, Researcher

Documentation

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(P382)?Specifications:	documentation - URL: https://tapor.ca/tools/1056
(P978)?External tutorial:	Exists, has been produced - URL: https://nominatim.org/tutorials/
(P180)?License:	GNU General Public License, version 2.0

Provision of data

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(P940)?Technology:	C, PHP, Transact-SQL
(P125)?Status of possesio:	Complete download possible, Search results partially visible in online interface
(P15)?Media type:	Online resource
(P937)?Referencing method:	URL-based identifier(s)
(P903)?Data format:	—
(P923)?API endpoint URL:	https://nominatim.org/release-docs/latest/api/Overview/
(P941)?SPARQL endpoint URL:	—
(P995)?Services offered:	Advice, Post-coding
(P950)?Cite as:	Sarah Hoffmann, Nominatim, Dresden 2025.

Dataset editing

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(P1302)?Dataset editing:	Anne Purschwitz