Milwaukie is a city in Clackamas County, Oregon, United States. A very small portion of the city extends into Multnomah County. The population was 20,291 at the 2010 census. Founded in 1847 on the banks of the Willamette River, the city, known as the Dogwood City of the West, was incorporated in 1903 and is noted as the birthplace of the Bing cherry. The city is now a suburb of Portland and also adjoins the unincorporated areas of Clackamas and Oak Grove.HistoryMilwaukie was settled in 1847 and formally platted in 1849 as a rival to the upriver Oregon City by Lot Whitcomb, who named it for Milwaukee, Wisconsin. At the time, the Wisconsin city was also frequently spelled "Milwaukie" before the current spelling was adopted. Some accounts also state that the Oregon city used an alternate spelling to prevent confusion at the post office.Whitcomb arrived in Oregon in 1848 and settled on a donation land claim, where he built a sawmill and a gristmill. Milwaukie rivaled Portland and Oregon City for a time, but Portland eventually became the bigger city because it had a deeper port. The first post office at Milwaukie was established in 1850, with Whitcomb as the first postmaster. The community was incorporated by the Oregon Legislative Assembly on February 4, 1903, originally as the Town of Milwaukie.