Welcome to

Alturas County, Idaho Genealogy and History

(A Defunct Idaho County)

Welcome to Genealogy Trails

Volunteers working to put free historical and genealogical data online

My name is Sandra Davis and as your Idaho State Coordinator I try to post as much data online as possible in order to make it freely available to all. We gratefully accept contributions of raw data such as census information, marriage/birth/death records, obituaries, county histories, biographies, old newspaper items - anything that would help someone build their family tree!!

Feel free to email me with your contributions - every little bit helps someone!

I regret that I am unable to do personal research.

Constructed in 1883, this courthouse holds two unique distinctions among Idaho courthouses. It is the oldest functioning courthouse in the State of Idaho. It was constructed to serve Alturas County after the county seat moved from Rocky Bar to Hailey. On March 5, 1895, the state legislature combined Alturas and Logan Counties into Blaine County. This structure no longer houses the court proceedings but houses the county clerk, assesor's, etc offices. It is listed on the National Register of Historic Places. 

A Little Bit of History

Alturas County was a county in Idaho Territory and later the State of Idaho from 1864 to 1895. It covered an area larger than the states of Maryland, New Jersey and Delaware, combined. Most present-day southern Idaho counties were created at least in part from the original Alturas County area. The name Alturas comes from a Spanish word for "mountain summits" or "mountainous heights."

Alturas County was created by the Idaho Territorial Legislature in February 1864. Later that year the mining camp of Rocky Bar was designated the county seat. The county seat was moved to Hailey in 1882.

In 1889, the Idaho Territorial Legislature created Elmore County and Logan County from parts of Alturas County. On March 5, 1895, to circumvent a recent state supreme court decision striking down an earlier county reorganization, the Idaho Legislature combined Alturas and Logan Counties into a new county called Blaine. Two weeks later on March 18, the southern portion of the newly-created Blaine County was split off to form Lincoln County with its county seat at Shoshone. Hailey remained the county seat of what is now Blaine County and Alturas County disappeared from the Idaho map.

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