See User manual for a complete list of the fields available for the geolocalistion.
www.jms2win.com/en/component/docman/doc_...rs-manual-version-13
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In very summary, you can have continent, country, state, city, zip code.
Depending on the Geolocalistion DB that you will use (free or billable MaxMind or billable quova), you can have more info and accurated info.
You can for example have longitude, latitude but also have area, metro station in USA and Canada.
See the websites of the DB provider to get more info on the accurancy and list of fields that you can get.