WASHINGTON TERRITORY, a territory of the United States. Its area is a part of that doubtful portion of the Louisiana cession (see ANNEXATIONS, I.), whose jurisdiction was long a subject of dispute between the United States and Great Britain, but was finally decided to be in the former by the treaty of 1846. (See NORTHWEST BOUNDARY.) It was originally a part of Oregon territory, and, before the erection of that territory into a state, was set off as a separate territory by the act of March 2, 1853. As at first organized, it contained 193,071 square miles, but transfers to Idaho have reduced it to an area of 69,994 square miles. Its population, by the census of 1880, was 75,116, an increase of 213.57 per cent. in the decade previous. Its capital is Olympia, and its governor (1880-84) is William A. Newell.
—The act of March 2, 1853, is in 10 Stat. at Large, 172.