Brigham City is located at 41°30'35" North, 112°0'52" West (41.510000, -112.014722).
According to the United States Census Bureau, the city has a total area of 14.34 mi2 (37.13 km2). 14.31 mi2 (37.07 km2) of it is land and 0.02 mi2 (0.06 km2) of it is covered by water. The total area is 0.15% water.
Brigham City is located in the Mountain Standard Time (MST) timezone, GMT-07:00. It observes Daylight Saving Time (DST).