what county is portland in?
Portland, Indiana. This article is about the city in Jay County. For the city in Fountain County formerly named Portland, see Fountain, Indiana. Portland is a city in and the county seat of Jay County, Indiana, United States. The population was 6,186 at the 2015 census.
Portland, Oregon. For other uses, see Portland (disambiguation). Portland (/ËpÉËrtlÉnd/) is a seaport and the largest city in the U.S. state of Oregon and the seat of Multnomah County. It is in the Willamette Valley region of the Pacific Northwest, at the confluence of the Willamette and Columbia Rivers.