Ersmark sī Sūi-tián Västerbotten Koān Umeå Chū-tī-chhī ê chi̍t-ê tē-hng siâⁿ-chhī (tätort). Kun-kù Sūi-tián koaⁿ-hong tī 2010 nî ê jîn-kháu phó͘-cha, Ersmark ū 1613-ūi ki-bîn.