Twin Falls County, Idaho

county in Idaho, United States

Twin Falls County is a county in the U.S. state of Idaho. As of the 2010 Census, the county had a population of 77,230.[1] The county seat and largest city is Twin Falls.[2]

Twin Falls County
Oregon Trail Wayside in Hagerman Fossil Beds National Monument
Map of Idaho highlighting Twin Falls County
Location within the U.S. state of Idaho
Map of the United States highlighting Idaho
Idaho's location within the U.S.
Coordinates: 42°21′N 114°40′W / 42.35°N 114.66°W / 42.35; -114.66
Country United States
State Idaho
FoundedFebruary 21, 1907
Named forSnake River waterfall
SeatTwin Falls
Largest cityTwin Falls
 • Total1,928 sq mi (4,990 km2)
 • Land1,921 sq mi (4,980 km2)
 • Water7.1 sq mi (18 km2)  0.4%%
 • Estimate 
 • Density44/sq mi (17/km2)
Time zoneUTC−7 (Mountain)
 • Summer (DST)UTC−6 (MDT)
Congressional district2nd
Perrine Bridge, Twin Falls, ID



  1. "State & County QuickFacts". United States Census Bureau. Retrieved July 1, 2014.
  2. "Find a County". National Association of Counties. Retrieved 2011-06-07.