Sund sī Sūi-tián Södermanland Koān Trosa 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, Sund ū 329-ūi ki-bîn.