Search by ZIP code (requested by OCNA)

[andrixnet]

Current OCNA has a US specific feature: "search caches by ZIP code".

The ZIP code data is located in table tl_2009_us_zcta5.
Due to size reason (700MB), I didn't upload it here, but @deg-pl can find it on the hosting as tl_2009_us_zcta5.sql

[miklobit]

I doubt if using country specific , fixed dataset is the right way.
Why not use OSM based geocoding service API like nominatim : http://wiki.openstreetmap.org/wiki/Nominatim .
OSM has probably world largest ( and for sure up to date ) set of zip-codes.
Query by postal code/country code returns bounding polygon:
http://nominatim.openstreetmap.org/search?postalcode=43-600&country=PL&format=json&polygon=1

[Mr-Yuck]

Hmm. My initial tests show that Nominatim will return a European location first before it shows the correct US location. And it does show the correct US location, just not first in the results. I can do some more extensive searching, and post the results, if that would help. Would there be any way to force it to choose a US location? We've only ever had "zip code searches" for the US. As a matter of fact, I believe Groundspeak has the same policy.