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Butte County is a rural county located in the U.S. state of Idaho. As of the 2010 census, the population was 2,891,〔(【引用サイトリンク】url=http://quickfacts.census.gov/qfd/states/16/16023.html )〕 making it the third-least populous county in Idaho. Its county seat and largest city is Arco.〔(【引用サイトリンク】accessdate=2011-06-07 )〕 The county was established in 1917 from parts of Blaine County. Butte County is included in the Idaho Falls, ID Metropolitan Statistical Area. Much of the eastern part of the county is the vast Idaho National Laboratory, which extends eastward into neighboring counties. ==Geography== According to the U.S. Census Bureau, the county has a total area of , of which is land and (0.1%) is water. The Little Lost River is located in Butte County. Its waters, along with the Big Lost River, disappear from the surface to flow underground into the Snake River Plain aquifer in Butte County. The county was named for the volcanic buttes that rise from the desert plain;〔(Idaho.gov - Butte County ) - accessed 2009-06-10〕 the largest is Big Southern Butte, located in the southern part of the county. It rises above the desert floor and was used as a landmark by pioneers.〔"Idaho for the Curious", by Cort Conley, ©1982, ISBN 0-9603566-3-0, p.200-202〕 The southwestern portion of the county includes the visitor center at the Craters of the Moon National Monument and Preserve, which extends south & west into three other counties. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Butte County, Idaho」の詳細全文を読む スポンサード リンク
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