John S. Orr was born in Guernsey County, Ohio, July 29, 1856. His father, John P. Orr, was an attorney and moved from Ohio to Missouri with his family when John S. was seventeen years old. Young John was educated in the public schools of Ohio and Normal School in Warrensburg, Missouri, after which he taught school in Missouri and in Oregon for several years. He took up the study of law while in Oregon and was admitted to the bar of that state in 1892. He practiced law in Klamath Falls, Oregon and was elected county judge of Klamath County.
In 1901, Judge Orr came to Reno and formed a partnership with Honorable Frank Norcross, which continued until 1904, when Judge Norcross was elected to the Nevada Supreme Court. Judge Orr continued his law practice for two years, until he was elected Judge of the Second Judicial District in 1907. In 1910, he was re-elected, but he resigned the office in 1913 to return to his private practice.
Judge Orr was married, in 1898 to Iva E. Simpson. They had three children, Marshall, William, and Elma. Judge Orr died November 1st, 1942, in Klamath Falls, Oregon.