Gudeok-ro 340beon-gil, Dongdaesin-dong 3(sam)-ga, Seo-gu postal codes (40)

On Gudeok-ro 340beon-gil in Dongdaesin-dong 3(sam)-ga, Seo-gu the postal code depends on the building number: numbers 4–24-1 use 49211, numbers 29–50 use 49212. Data as of August 2026.