Geocoding [dʒiː.oʊkoʊdɪŋɡ]: The process of converting address data (like postal codes, street names or complete addresses) into numerical coordinates that mark their place on the globe.

Most of the time, this place is represented by latitude and longitude. A geocoder is a piece of software that calculates this conversion. The spatial data is drawn from some framework that links street addresses to their geographical representation, like an OpenStreetMap service or the Google maps API.

You can use, for example, the Excel Geocoding Tool or OpenRefine to geocode your data.

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