Muhak-ro 21beon-gil, Gwangan-dong, Suyeong-gu postal codes (65)
On Muhak-ro 21beon-gil in Gwangan-dong, Suyeong-gu the postal code depends on the building number: numbers 7–20 use 48270, numbers 27–46 use 48269, numbers 49–72 use 48268, and 2 more ranges. Data as of August 2026.