Postal code (English Wikipedia)

Hill, Clarke & Co., Inc. (1 July 1920). "Advertisement for a drill press, 1920". American Machinist: 389.{{cite journal}}: CS1 maint: multiple names: authors list (link)
Lynd-Farquhar Company (30 September 1920). "Advertisement for machine tools". American Machinist: 284.
Planet, Lonely (1 November 2012). Not For Parents Travel Book. Lonely Planet Publications. p. 84. ISBN 978-1-74220-855-8.

bpost.be (Global: low place; English: low place)

"Ook dit jaar, helpt bpost de Sint". bpost.be. bpost. Retrieved 2 May 2018.
"Cette année également, bpost apporte son aide à Saint-Nicolas". bpost.be. bpost. Retrieved 2 May 2018.

cabinetoffice.gov.uk (Global: low place; English: low place)

"BS7666 Address". Data Standards Catalogue. UK National Archives. 2 October 2009. Archived from the original on 28 January 2013. Retrieved 15 August 2015.

canadapost.ca (Global: low place; English: low place)

Canada Post (27 January 2007). "Over one million children write letters to Santa". Archived from the original on 9 April 2010. Retrieved 27 April 2009.

codigopostal.gob.ec (Global: low place; English: low place)

"Consulte su Código Postal en Ecuador". www.codigopostal.gob.ec (in Spanish). Retrieved 8 January 2026.

columbia.edu (Global: 554^th place; English: 368^th place)

da Cruz, Frank (17 May 2008). "Frank's Compulsive Guide to Postal Addresses". Columbia University. Archived from the original on 25 July 2008. Retrieved 4 June 2008.

deutschepost.de (Global: low place; English: low place)

"The history of the postcode". Deutsche Post. Archived from the original on 16 July 2011. Retrieved 10 October 2010.

fundinguniverse.com (Global: 1,737^th place; English: 1,175^th place)

"Company History: Schweizerische Post-Telefon-und-Telegrafen-Betriebe". Funding Universe. Archived from the original on 9 September 2011. Retrieved 10 October 2010.

gov.jm (Global: low place; English: low place)

jamaicapost.gov.jm

"Post Code Project Suspended Indefinitely". Jamaica Post. 12 February 2007. Archived from the original on 26 February 2010. Retrieved 4 March 2010.

gov.uk (Global: 401^st place; English: 228^th place)

"VAT: insolvency". gov.uk. Archived from the original on 6 January 2018. Retrieved 2 May 2018.

greatdata.com (Global: low place; English: low place)

"GreatData.com (a licensee of Canada Post data)". Archived from the original on 2 April 2013. Retrieved 8 February 2013.

imprentanacional.go.cr (Global: low place; English: low place)

División Territorial Administrativa de la República de Costa Rica (PDF) (in Spanish). Editorial Digital de la Imprenta Nacional. 8 March 2017. ISBN 978-9977-58-477-5.

independent.co.uk (Global: 46^th place; English: 29^th place)

"A short history of the postcode". The Independent. Archived from the original on 25 February 2011. Retrieved 25 June 2014.

ippaper.com (Global: low place; English: low place)

glossary.ippaper.com

"ZIP (Zone Improvement Plan) Code". International Paper Company. Archived from the original on 19 November 2009. Retrieved 10 October 2010.

japan-guide.com (Global: 7,130^th place; English: 8,318^th place)

"Postal services". www.japan-guide.com. 15 September 2025. Retrieved 8 January 2026.

mirror.co.uk (Global: 440^th place; English: 288^th place)

40 facts about the postcode to mark 40th anniversary as vital part of daily life Archived 16 March 2018 at the Wayback Machine, Daily Mirror, 26 August 2014

nationalarchives.gov.uk (Global: 718^th place; English: 414^th place)

webarchive.nationalarchives.gov.uk

"BS7666 Address". Data Standards Catalogue. UK National Archives. 2 October 2009. Archived from the original on 28 January 2013. Retrieved 15 August 2015.

nlb.gov.sg (Global: 562^nd place; English: 301^st place)

eresources.nlb.gov.sg

Chia, Joshua (13 July 2016). "Six-digit postal code system". Singapore Infopedia. National Library Board. Archived from the original on 5 October 2021. Retrieved 3 October 2018.

pgrweb.go.cr (Global: low place; English: low place)

"Declara oficial para efectos administrativos, la aprobación de la División Territorial Administrativa de la República N°41548-MGP". Sistema Costarricense de Información Jurídica (in Spanish). 19 March 2019. Retrieved 26 September 2020.

postakodumne.com (Global: low place; English: low place)

"Posta Kodum Ne" (in Turkish). Archived from the original on 4 April 2011. Retrieved 25 August 2021.

posti.fi (Global: low place; English: low place)

my.posti.fi

"Welcome to the Santa Claus´ Main Post Office". my.posti.fi. Retrieved 8 August 2024.

telegraph.co.uk (Global: 40^th place; English: 27^th place)

Who answers all the letters sent to Father Christmas? Archived 25 December 2016 at the Wayback Machine, The Daily Telegraph, 5 December 2013

theguardian.com (Global: 16^th place; English: 11^th place)

Charles Arthur. "Guardian newspaper article on postcodes". The Guardian. London. Archived from the original on 1 December 2017. Retrieved 26 February 2018.

un.org (Global: 117^th place; English: 160^th place)

Nations, United. "Celebrating 150 years of the Universal Postal Union". United Nations. Retrieved 16 July 2026.

upns.org (Global: low place; English: low place)

"The First Postal (ZIP) Code in the World". Ukrainian Philatelic and Numismatic Society. 20 April 2009. Archived from the original on 23 April 2010. Retrieved 4 March 2010.

usps.com (Global: 2,610^th place; English: 1,407^th place)

faq.usps.com

"USPS.com FAQs". faq.usps.com. Retrieved 8 January 2026.

web.archive.org (Global: 1^st place; English: 1^st place)

"The First Postal (ZIP) Code in the World". Ukrainian Philatelic and Numismatic Society. 20 April 2009. Archived from the original on 23 April 2010. Retrieved 4 March 2010.
"The history of the postcode". Deutsche Post. Archived from the original on 16 July 2011. Retrieved 10 October 2010.
Chia, Joshua (13 July 2016). "Six-digit postal code system". Singapore Infopedia. National Library Board. Archived from the original on 5 October 2021. Retrieved 3 October 2018.
"ZIP (Zone Improvement Plan) Code". International Paper Company. Archived from the original on 19 November 2009. Retrieved 10 October 2010.
"Company History: Schweizerische Post-Telefon-und-Telegrafen-Betriebe". Funding Universe. Archived from the original on 9 September 2011. Retrieved 10 October 2010.
"A short history of the postcode". The Independent. Archived from the original on 25 February 2011. Retrieved 25 June 2014.
"GreatData.com (a licensee of Canada Post data)". Archived from the original on 2 April 2013. Retrieved 8 February 2013.
"Post Code Project Suspended Indefinitely". Jamaica Post. 12 February 2007. Archived from the original on 26 February 2010. Retrieved 4 March 2010.
da Cruz, Frank (17 May 2008). "Frank's Compulsive Guide to Postal Addresses". Columbia University. Archived from the original on 25 July 2008. Retrieved 4 June 2008.
"Posta Kodum Ne" (in Turkish). Archived from the original on 4 April 2011. Retrieved 25 August 2021.
40 facts about the postcode to mark 40th anniversary as vital part of daily life Archived 16 March 2018 at the Wayback Machine, Daily Mirror, 26 August 2014
"VAT: insolvency". gov.uk. Archived from the original on 6 January 2018. Retrieved 2 May 2018.
Who answers all the letters sent to Father Christmas? Archived 25 December 2016 at the Wayback Machine, The Daily Telegraph, 5 December 2013
Canada Post (27 January 2007). "Over one million children write letters to Santa". Archived from the original on 9 April 2010. Retrieved 27 April 2009.
Charles Arthur. "Guardian newspaper article on postcodes". The Guardian. London. Archived from the original on 1 December 2017. Retrieved 26 February 2018.

Postal code (English Wikipedia)

bbc.co.uk (Global: 11th place; English: 10th place)

news.bbc.co.uk

books.google.com (Global: 3rd place; English: 3rd place)

bpost.be (Global: low place; English: low place)

cabinetoffice.gov.uk (Global: low place; English: low place)

canadapost.ca (Global: low place; English: low place)

codigopostal.gob.ec (Global: low place; English: low place)

columbia.edu (Global: 554th place; English: 368th place)

deutschepost.de (Global: low place; English: low place)

fundinguniverse.com (Global: 1,737th place; English: 1,175th place)

gov.jm (Global: low place; English: low place)

jamaicapost.gov.jm

gov.uk (Global: 401st place; English: 228th place)

greatdata.com (Global: low place; English: low place)

imprentanacional.go.cr (Global: low place; English: low place)

independent.co.uk (Global: 46th place; English: 29th place)

ippaper.com (Global: low place; English: low place)

glossary.ippaper.com

japan-guide.com (Global: 7,130th place; English: 8,318th place)

mirror.co.uk (Global: 440th place; English: 288th place)

nationalarchives.gov.uk (Global: 718th place; English: 414th place)

webarchive.nationalarchives.gov.uk

nlb.gov.sg (Global: 562nd place; English: 301st place)

eresources.nlb.gov.sg

pgrweb.go.cr (Global: low place; English: low place)

postakodumne.com (Global: low place; English: low place)

posti.fi (Global: low place; English: low place)

my.posti.fi

telegraph.co.uk (Global: 40th place; English: 27th place)

theguardian.com (Global: 16th place; English: 11th place)

un.org (Global: 117th place; English: 160th place)

upns.org (Global: low place; English: low place)

usps.com (Global: 2,610th place; English: 1,407th place)

faq.usps.com

web.archive.org (Global: 1st place; English: 1st place)

bbc.co.uk (Global: 11^th place; English: 10^th place)

books.google.com (Global: 3^rd place; English: 3^rd place)

columbia.edu (Global: 554^th place; English: 368^th place)

fundinguniverse.com (Global: 1,737^th place; English: 1,175^th place)

gov.uk (Global: 401^st place; English: 228^th place)

independent.co.uk (Global: 46^th place; English: 29^th place)

japan-guide.com (Global: 7,130^th place; English: 8,318^th place)

mirror.co.uk (Global: 440^th place; English: 288^th place)

nationalarchives.gov.uk (Global: 718^th place; English: 414^th place)

nlb.gov.sg (Global: 562^nd place; English: 301^st place)

telegraph.co.uk (Global: 40^th place; English: 27^th place)

theguardian.com (Global: 16^th place; English: 11^th place)

un.org (Global: 117^th place; English: 160^th place)

usps.com (Global: 2,610^th place; English: 1,407^th place)

web.archive.org (Global: 1^st place; English: 1^st place)