Interesting news via GFN that the Chinese consulate in Gwangju was upgraded to a consulate-general (총영사관) last week, a result of an agreement between South Korean President Lee Myung-bak and Chinese President Hu Jin-tao made last August. It becomes the second PRC Consulate-General in South Korea, in addition to the one in Busan. Neither the GFN blurb or the Newsis article it's based on have the specific location, but the latter says it is in Nam-gu, Wolsan-dong. The consulate had been around since March, 2007, though I hadn't known that until this morning. There is a website for the consulate-general here, in Chinese and Korean.
A write-up on the event says there are roughly 36,000 Chinese in its jurisdiction (Jeollanam-do, Jeollabuk-do, and Jeju-do).