Sandy is located at 40°34'20" North, 111°51'34" West (40.572415, -111.859610).
According to the United States Census Bureau, the city has a total area of 22.35 mi2 (57.88 km2). 22.33 mi2 (57.82 km2) of it is land and 0.02 mi2 (0.05 km2) of it is covered by water. The total area is 0.09% water.
Sandy is located in the Mountain Standard Time (MST) timezone, GMT-07:00. It observes Daylight Saving Time (DST).