Jefferson County Map
The County of Jefferson is located in the State of Idaho. Find directions to Jefferson County, browse local businesses, landmarks, get current traffic estimates, road conditions, and more. According to the 2020 US Census the Jefferson County population is estimated at 30,581 people. The Jefferson County time zone is Mountain Daylight Time which is 7 hours behind Coordinated Universal Time (UTC).
Nearby counties include Bingham County, Bonneville County, Butte County, Clark County, Fremont County, Madison County.
Top cities include Rigby, Menan, Ririe, Roberts, Lewisville