data-services/geocoder/postal-codes

Postal code geocoder (polygons)

Function

Creation steps

Data Sources

Australian polygons - http://www.abs.gov.au/AUSSTATS/abs@.nsf/DetailsPage/2033.0.55.0012011?OpenDocument Download the KMZ for Postal Area IRSD, SEIFA 2011. Unzip and upload the kmz

Canadian polygons - http://www12.statcan.gc.ca/census-recensement/2011/geo/bound-limit/bound-limit-2011-eng.cfm Download ESRI Shp, Forward Sortation Areas, Digital Boundary

USA polygons - http://www2.census.gov/geo/tiger/TIGER2013/ZCTA5/tl_2013_us_zcta510.zip

French polygons - http://www.data.gouv.fr/dataset/fond-de-carte-des-codes-postaux

All countries points GeoNames - http://download.geonames.org/export/zip/allCountries.zip

Preparation details

Postal code geocoder (points)

Download the allCountries.zip file from GeoNames. Import and rename the table as tmp_zipcode_points. You can follow the manual process explained below instead.

This dataset includes data for the following countries:

CH, ES, GU, ZA, MX, SJ, NL, RU, AX, TH, AR, MY, RE, LK, GB, IS, GL, JE, DK, IN,
SI, GP, MQ, BR, SM, BG, NZ, MP, CZ, DO, MD, PK, TR, VI, BD, GG, LT, PM, MC, US,
IT, LU, SK, LI, PR, IM, NO, PT, PL, FI, JP, CA, DE, HU, PH, SE, VA, YT, MK, FR,
MH, RO, FO, GF, AD, HR, DZ, GT, AU, AS, BE, AT

The columns that are loaded are the following ones:

• field_1: corresponding to ISO2
• field_10: corresponds to latitude
• field_11: corresponds to longitude
• field_2: corresponds to ZIP code

1. Georeference the table using field11 as longitude and field10 as latitude in order to construct the_geom.

2. Add column iso3 (text) and run sql/build_zipcode_points_table.sql.

Alternative manual process

1. Open the allCountries.txt file with Excel an add a new row on top.

2. Delete columns C-I and L.

3. In the first row, add the following columns: iso2, zipcode, lat, long.

4. Import the file ignoring step 1.

The big size of the dataset may cause interruptions in the processing of the coordinates after uploading the file, manipulating the file before importing is a faster workaround.