Walla Walla is located at 46°3'52" North, 118°20'30" West (46.064722, -118.341667).
According to the United States Census Bureau, the city has a total area of 10.83 mi2 (28.06 km2). 10.82 mi2 (28.01 km2) of it is land and 0.02 mi2 (0.05 km2) of it is covered by water. The total area is 0.18% water.
Walla Walla is located in the Pacific Standard Time (PST) timezone, GMT-08:00. It observes Daylight Saving Time (DST).