[GIS] Poland ZIP code shapefile

csvdatapointpolandzip-codes

I'm looking for Poland zip-code data (polygons). I have found data in csv on the http://www.geonames.org/ but there are only point data.

Do you know any free source containing this data?

Best Answer

I think to find free layer polygon for Polish postal codes will be very difficult. You can find several companies offering this kind of GIS data, for example.

Imagis

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TIGER ZIP Code boundaries and TIGER Streets(sorted by FIPS codes) free from the U.S. Census Bureau and should have all the data you need.

[GIS] Filtering zip code shapefile by state/other zip code shapefiles

From the ZCTA brochure

ZCTAs follow census block boundaries but are independent of all other statistical and governmental entities, therefore ZCTAs frequently cross the boundaries of other geographic boundaries. In addition, ZCTAs may occasionally cross state boundaries.

That said, if you're using postgis, you can accomplish this like this.

SELECT zcta.gid                  
FROM census.zcta
JOIN census.state AS s
  ON ST_Intersects( s.geog, zcta.geog )
WHERE s.name = 'Texas'; -- or whatever name you want.

Of course, TIGER is a beast. The Texas 2016 polygon has 58,569 points. You may want to ST_Subdivide first. I wouldn't even meaningfully try to do this in QGis. It's too much of a bear of a query.

Best Answer

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[GIS] Zip Code Boundary Maps for Commercial Use

[GIS] Filtering zip code shapefile by state/other zip code shapefiles

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