The foreign population is on the rise in Korea, according to this article from the Korea Times. The population increased 4.6 percent in the last year, as more short-term visitors are coming for visits, and more long-term visitors are staying for work, education, or family-related reasons.
I read another fact yesterday that the population in Gwangju has increased by 6.35% since 1999, with over 1,400,000 people living in the city these days. In addition, the foreign population has experienced a enormous increase of 302% from an earlier census. Now there are over 12,000 foreigners that call Gwangju home. I can see the subtle effects of this increase as more and more places in Gwangju are becoming foreigner-friendly (making the effort to be multi-lingual or offering more foreigner services).