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    <p>The functionality you're describing is called "Reverse-Geocoding" - taking a lat/lng coordinate, and returning the name of the nearest place to that location. (Geocoding is the opposite - providing a placename in order to retrieve the associated lat/lng coordinates).</p> <p>You can certainly build a reverse-geocoding service that uses SQL Server as the backend database, but there's nothing built-in to provide such functionality.</p> <p>If you simply want to reverse-geocode a set of existing data, rather than create this functionality in SQL Server, you might find it easier to use an existing webservice. For example, the geonames findNearbyPlaceName has a REST interface that you access via the following URL template:</p> <p><a href="http://api.geonames.org/findNearbyPlaceName?lat=52.62&amp;lng=1.28&amp;username=demo" rel="nofollow">http://api.geonames.org/findNearbyPlaceName?lat=52.62&amp;lng=1.28&amp;username=demo</a></p> <p>This example returns information about the nearest known entity to the requested lat/lng coordinates (52.62,1.28) from the geonames database, as follows:</p> <pre><code>&lt;geonames&gt; &lt;geoname&gt; &lt;toponymName&gt;Norwich&lt;/toponymName&gt; &lt;name&gt;Norwich&lt;/name&gt; &lt;lat&gt;52.62783&lt;/lat&gt; &lt;lng&gt;1.29834&lt;/lng&gt; &lt;geonameId&gt;2641181&lt;/geonameId&gt; &lt;countryCode&gt;GB&lt;/countryCode&gt; &lt;countryName&gt;United Kingdom&lt;/countryName&gt; &lt;fcl&gt;P&lt;/fcl&gt; &lt;fcode&gt;PPLA2&lt;/fcode&gt; &lt;distance&gt;1.51318&lt;/distance&gt; &lt;/geoname&gt; &lt;/geonames&gt; </code></pre>
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    1. POIs it possible to get City from Longitude/Latitude?
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    1. USAlastair Aitchison
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