Port Ludlow is located at 47°55'32" North, 122°40'54" West (47.925556, -122.681944).
According to the United States Census Bureau, the city has a total area of 14.06 mi2 (36.42 km2). 11.43 mi2 (29.60 km2) of it is land and 2.63 mi2 (6.82 km2) of it is covered by water. The total area is 18.72% water.
Port Ludlow is located in the Pacific Standard Time (PST) timezone, GMT-08:00. It observes Daylight Saving Time (DST).