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New 5-Digit Postal Code System for South Korea

New 5-Digit Postal Code System for South Korea

On August 1, 2015, The Korea Postal code system changed from a 6-digit postal code system to a 5-digit postal code system. This means you should use the new 5-digit postal code instead of the old 6-digit code when you send your visa documents to South Korea.

Some courier service may still use the old 6-digit postal code system and demand you the old one when you try to send your documents. We have been told that the courier service say that the postal codes our visa processing staff sent were wrong. Our visa staff tried to explain the new changes but it has not been so successful as the system they use returns an error for the 5-digit postal code as wrong or a missing digit.

Currently, it’s verified that Fedex upgraded their system to accept the new Korean postal code(March 2016).

Why the Change is Necessary?

While most local Koreans are highly doubt the change is necessary, this change is based on the Article 19(3) of the Road Name Address Act. The State Basic District number is given to each State Basic District.

Article 19(3) states:

[Article 19(3) of the Road Name Address Act] District numbers publicly notified pursuant to Article 18(3) shall constitute basic units of various districts publicized for the general public under other Acts, such as statistical districts, postal districts, and jurisdictions, unless particular reasons exist to the contrary.

Each State Basic District code is used as the basic unit of various districts controlled by public authorities for the purposes including statistics, firefighting, public order, mail service and so on. So the Korean Government believes that the new system will provide more effective service in various areas in many ways.

How It is Reformed?

Simply put, 6-digit to 5-digit. It appears to be simpler dropping one digit. Actually, it has more than what it appears. The announcement says, “the 5-digit district number assigned based on the geographic features (roads, rivers, railroads, etc.) and assigned to each State Basic District will replace the existing 6-digit postal code created based on the administrative units (Eup, Myeon and Dong) and districts assigned to each postman.”

For example, digits 01~09 are assigned for Seoul-si. As Jongro-gu uses 03, the new 5-digit postal code for the area starts with 030~032. The last two digits are serial number which is designated to each postman who actually delivers mail to each house.

Image from the Korea Post Announcement


It is not necessary to understand the new system thoroughly for native teachers even to Koreans unless they are working for the Post Office. So I will not go further. But the following is useful links you might be interested.


Busan U1 Post Office by hyolee2


Useful Links

Link to the official notice of postal code reform into the state basic district system by Korea Post:

Postal Code Finder:


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Life in Korea – Internet, Smartphones, IT

Life in Korea – Internet, Smartphones, IT



South Korea is proud of its advanced technology and light speed internet connection. The internet providers offer the connection about 25,000~35,000KRW. The speed is usually at least 100Mbps and up to 200Mbps(both up and down).

Popular service providers include KT(Korea Telecom), SK Broadband, LG U+, and CJ Hello Net. If you’re agreeing to a one-year contract, you can usually get connected without a service charge. Some employers will assist you in setting the internet connection up.

You’ll also find lots of “PC Bangs(Internet cafe)”. Some are open 24 hours, with a snack bar service with beverages, noodles, and other snacks. PC Bangs generally only offer Internet service, and may not have business services such as faxes, scanners, or printers. Fees run about 1000-2000KRW/hour.

Internet Usage Statistics:
40,080,000 Internet users as of Sept 2008, 70.7% of the population, according to Ministry of Science, ICT and Future Planning.

<Internet Usage and Population Statistics (measure : million)>















% Pop








Mobile devices – Smartphones(or cellphones) and tablets

Korea has been cutting edge in the field of mobile devices. A smartphone has high resolution camera, MP3 player, blue tooth communication, touch screen and DMB(Digital multimedia Broadcasting) function. Some of the World class manufactures are Samsung Electronics and LG Electronics. You can purchase a smartphone at a lower price with two year contract. Without contract, the price is standard. Now even the elementary students have their own smartphones in Korea.


IP TV, Satelite TV, and Cable TV

You can use cable TV in a very cheap price(about 5,000KRW) or IPTV with internet service. The satellite TV is also possible in Korea. The providers includes CJ Hello Vision(Cable TV), KT(IPTV), LG U+(IPTV), SK Broadband(IPTV) and SKY Life(Satellite TV). There are basic, standard and premier pack depends on the number of channels and services. If you use bundle pack(internet+TV) the service charge may be discounted.


IT Technology

Korea is said global IT leader for its enthusiasm and advancement in IT technology.
Korea’s ITU(Digital Opportunity Index) is global ranking 1st for 3 successive years(2005~2007).
Korea’s NIA(National informtization Index) is global ranking 3rd in 2007.




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Copyright 2009-2014 TJ Recruiting co. All right Reserved