OCONTO, a city and the county-seat of Oconto county, Wisconsin, U.S.A., about 130 m. N. of Milwaukee, on the W. shore of Green Bay, at the mouth of the Oconto river. Pop. (1890) 5219; (1900) 5646, of whom 1544 were foreign-born; (1905) 5722; (1910) 5629. It is served by the Chicago & North-Western and the Chicago, Milwaukee & St Paul railways. The city lies in a good farming country, and has a considerable lake commerce in lumber and fish. The first settlement was made here in 1846, and Oconto was chartered as a city in 1882.