Idaho County, Idaho

Idaho County
Tolo Lake
Official seal of Idaho County
Map of Idaho highlighting Idaho County
Location within the U.S. state of Idaho
Map of the United States highlighting Idaho
Idaho's location within the U.S.
Coordinates: 45°51′N 115°28′W / 45.85°N 115.46°W / 45.85; -115.46
Country United States
State Idaho
FoundedDecember 20, 1861
Named forIdaho
SeatGrangeville
Largest cityGrangeville
Area
 • Total
8,503 sq mi (22,020 km2)
 • Land8,477 sq mi (21,960 km2)
 • Water26 sq mi (70 km2)  0.3%
Population
 (2020)
 • Total
16,541
 • Estimate 
(2023)
17,890 Increase
 • Density1.9/sq mi (0.75/km2)
Time zones
North of Salmon RiverUTC−8 (Pacific)
 • Summer (DST)UTC−7 (PDT)
South of Salmon RiverUTC−7 (Mountain)
 • Summer (DST)UTC−6 (MDT)
Congressional district1st
Websiteidahocounty.org

Idaho County is a county in the U.S. state of Idaho, and the largest by area in the state. As of the 2020 census, the population was 16,541. The county seat is Grangeville.[1] Previous county seats of the area were Florence (1864–68), Washington (1868–75), and Mount Idaho (1875–1902).[2]

  1. ^ "Find a County". National Association of Counties. Archived from the original on May 31, 2011. Retrieved June 7, 2011.
  2. ^ "SITE REPORT - WARRENS" (PDF). Idaho State Historical Society. Retrieved February 19, 2017.