Pohang, formerly spelled Po-Hang, is the largest city in North Gyeongsang Province, South Korea, with a population of 499,363 as of 2022, bord…Pohang, formerly spelled Po-Hang, is the largest city in North Gyeongsang Province, South Korea, with a population of 499,363 as of 2022, bordering the Sea of Japan to the east, Yeongcheon to the west, Gyeongju to the south, and Cheongsong and Yeongdeok to the north.