Postal Code Datasets used for geonames
- Andorra (AD): Olivier Moreno
- Algeria (DZ): www.poste.dz/codepostal/
- Argentina (AR): www.correoargentino.com.ar/
- Austria (AT): www.post.at
- Australia (AU): www.auspost.com.au, www.abs.gov.au, www.corra.com.au/support/downloads/
- Bangladesh (BD): www.bangladeshpost.gov.bd
- Belgium (BE): www.post.be
- Brazil (BR): see forum thread
- Canada, FSA only (CA): en.wikipedia.org
- Switzerland (CH): www.post.ch, Amtliche Vermessung Schweiz / swisstopo
- Czech Republic (CZ): www.cpost.cz
- Germany (DE): sourceforge.net/projects/opengeodb
- Denmark (DK): www.postdanmark.dk
- Dominican Republic (DO): www.inposdom.gob.do
- Spain (ES): inmadrid.enredados.com/, www.arrakis.es/~pocha/
- Finland (FI): www.verkkoposti.com/e3/postinumeroluettelo
- France (FR): www.unice.fr/cgi-bin/codePostal
- Guatemala (GT): http://www.elcorreo.com.gt/new/Codigos%20Postales/Codigos-postales.html
- Croatia (HR): www.posta.hr
- Hungary (HU): www.posta.hu
- India (IN): www.indiapost.gov.in
- Iceland (IS): www.postur.is
- Italy (IT): www.poste.it, easyreserve
- Japan (JP): http://www.post.japanpost.jp/
- Liechtenstein (LI): www.post.ch
- Lithuania (LT): www.post.lt
- Luxembourg (LU): www.ept.lu
- Malaysia (MY): Seikan, POS Malaysia
- Moldova (MD): posta.org.md, www.ungheni-labs.com
- Mexcio (MX): www.sepomex.gob.mx
- Macedonia (MK): www.posta.com.mk
- Monaco (MC): Lucien Giordani
- The Netherlands (NL): nl.wikipedia.org
- New Zealand (NZ): www.nzpost.co.nz
- Norway (NO): www.posten.no
- Pakistan (PK): www.pakpost.gov.pk
- Poland (PL): www.poczta-polska.pl
- Portugal (PT): www.ctt.pt
- Sweden (SE): www.pellesoft.se/upload/program/prg00745.zip
- Slovenia (SI): www.posta.si
- Slovakia (SK): www.slposta.sk
- San Marino (SM): www.poste.it
- Sri Lanka (LK): www.lacnet.org/slnews/postal_codes.html
- Thailand (TH): www.thailandpost.com
- Turkey (TR): http://postakodu.ptt.gov.tr/
- United Kingdom (UK): OS Open Data, Contains Royal Mail data Royal Mail copyright and database right 2010.
- United States (US): us census
- South Africa (ZA): www.sapo.co.za
