City of Selby, South Dakota

Selby is located at 45°30'23" North, 100°1'54" West (45.506389, -100.031667).

According to the United States Census Bureau, the city has a total area of 0.83 mi² (2.16 km²). 0.83 mi² (2.16 km²) of it is land and none of the area is covered by water.

Selby is located in the Central Standard Time (CST) timezone, GMT-06:00. It observes Daylight Saving Time (DST).