Turnerville is located at 42°50'53" North, 110°53'46" West (42.848103, -110.896247).
According to the United States Census Bureau, the city has a total area of 4.06 mi2 (10.52 km2). 4.06 mi2 (10.52 km2) of it is land and none of the area is covered by water.
Turnerville is located in the Mountain Standard Time (MST) timezone, GMT-07:00. It observes Daylight Saving Time (DST).