Washington, D.C. chiàⁿ-miâ Columbia Te̍k-pia̍t-khu (Eng-gí: District of Columbia), hàn-miâ Hôa-sēng-tùn (華盛頓[1]) ia̍h Hôa-hú (華府), sī Bí-kok ê siú-to͘, chham Virginia kap Maryland sio-chiap. Thóng-kè-siōng ê jîn-kháu ū 689545, to͘-hōe-khu jîn-kháu ū 530 bān.