- Jemulpo-gu and Seohae-gu to retain existing codes; Yeongjong-gu and Geomdan-gu assigned new postal designations effective July 1 -

Incheon Metropolitan City has finalized all structural and technical preparations to reorganize its National Basic District system, fully aligning it with the city’s historic administrative restructuring set to take effect on July 1.

National Basic Districts serve as the foundational geographic building blocks under the national road-name address system, dividing territory into units smaller than eup, myeon, and dong. These standardized districts form the structural basis for various legally mandated public zones, most notably dictating the five-digit postal codes utilized across Korea since August 1, 2015.

To guarantee a seamless administrative transition, Incheon prepared a coordination plan in February of last year by meticulously collaborating with the Ministry of the Interior and Safety, local district offices, and the Korea Local Information Research & Development Institute.

Following extensive consultations with Korea Post and major private logistics enterprises in March of this year, the city submitted its final blueprint to the central government. The completed reorganization plan was officially confirmed and ratified by the Ministry on June 12.

To eliminate potential public confusion after the boundary shift, Incheon decided to retain existing National Basic District numbers for Jemulpo-gu and Seohae-gu, while assigning new numbers (postal codes) to Yeongjong-gu and Geomdan-gu.

For details on the adjusted National Basic Districts, simply go to business.juso.go.kr. The website offers downloadable datasets that map the exact parameters before and after the reorganization, allowing anyone to compare and verify the altered postal codes.

Furthermore, Incheon is proactively syncing this updated dataset with critical public and private safety nets. This ensures that post offices managing mail and freight, fire departments handling emergency dispatches, and customs offices processing international parcel deliveries can operate without a single day of systemic disruption.

Lee Won-ju, Director of the Urban Planning Bureau of Incheon, stated, “This structural overhaul goes far beyond redrawing lines on a map. It is the vital infrastructure required to ensure Incheon’s new administrative system embeds itself flawlessly into our citizens’ daily routines. We remain fully committed to delivering smart, citizen-centric address information services that support safe and efficient community living.”