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Reverse Geocoding Webservices from geonames "Reverse Geocoding" is the process of finding an address, toponym or an other type of resource for a given lat/lng pair. GeoNames offers a wide range of reverse geocoding web services. Find nearby postal codes : finds postal codes and place names for the given lat/lng within a given radius. (supported countries) ...


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I would say the best way is to use an online API. Managing a database on your end is a PAIN! Trust me, I've been there and IP locations change all the time so you'd have to update your database on the regular. With an online API they do all of that work for you. I've been using an online API at https://www.zipcodeservices.com. I get 100,000 queries a ...


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SmartyStreets has a LiveAddress for Lists service that is designed to do exactly what you're looking for: You upload a list (.csv, .txt, or .xls) and a few minutes later you download the output files, which give 40+ data points, including geocode data, for each address. Our pricing is very competitive, with no minimum purchase price, and if you're a startup ...


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You could try MMQGIS plugin in QGIS. It uses Google API for geo-coding and reverse geo-coding. http://plugins.qgis.org/plugins/mmqgis/ Go to MMQGIS tab> Transfer > Geocode CSV from Google. It takes CSV file as input but output geocoded file and not-found-addresses file in case of no address found on google map. Make sure your CSV is in the right format ...


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You could try Nominatim from OpenStreetMap: Nominatim (from the Latin, 'by name') is a tool to search OSM data by name and address and to generate synthetic addresses of OSM points (reverse geocoding). It can be found at http://nominatim.openstreetmap.org You may need to write the wrapper functionality to allow uploading of a text file.


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This may vary depending on where in the US you are, but typically as part of the development process addresses are assigned by the city/county assessor around the time the plat is recorded. I don't think it's so much a case of 'validating' as getting updated data, just like your geocoding vendor. It sounds like the post office has more recently updated their ...


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In the end I got this to work. Out of frustration and not being sure what was happening I downloaded multiple versions of postgreSQL 64 bit and also OpenGeo 32 bit. I didn't realize the ports and the server names were not matching. Once I fixed that the geocoding works. Now the dilemma is how to batch geocode a large number of addresses (like 1000), when ...


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Did actually find one problem: %%z was unexpected at this time. And with this the unzipping was not working. I was copying and pasting from Wordpad into Command Prompt window (so that I see the error messages).The double percent sign "%%" is for commands in batch files. In Command Prompt window it should be "%" sign. Instead of copying and pasting the ...


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Just change the second line RETURNS geometry(Point, 4326) to RETURNS geometry The "type modifier" is a 2.0 feature. You might have other problems if GeoAlchemy expects PostGIS 2.0+, but for this particular function, just removing the typmod syntax should suffice.


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Los Angeles County EGIS has developed a nationwider locator. http://gis.lacounty.gov/ArcGIS/rest/services/Locators/CAMS_Locator_Nationwide/GeocodeServer



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