Gresham ( ) is a city in the Willamette Valley, Located in Multnomah County in the U.S. state of Oregon, bordered by Portland to the northwest and partially in the southwest. It was first settled in the early 1850s by the Powell brothers. It remained unincorporated until 1905; it was named after Walter Quintin Gresham, an American Civil War general and United States Secretary of State.
The early economy of the city was primarily supported by agriculture, and by the mid-20th century, the city saw a population boom, increasing from 4,000 residents to more than 10,000 between 1960 and 1970. The population was 114,247 at the 2020 census, making it the second most populous city in the county and the fourth-most populous city in Oregon. Gresham is an economic center for eastern Multnomah County.
History
thumb|left|Downtown Gresham in 1918
Prior to settlement, the first documented inhabitants of the Gresham area were Kalapuya Native Americans, who lost a majority of their population to disease by the 1830s. In 1884, a local merchant petitioned for a post office from the United States Post Office Department to be established in his store, proposing to name it after Postmaster General Walter Q. Gresham if his request was granted. Concurrently, other community members secured a post office named "Campground," which referred to the area's religious camp meeting site and its convenience as a stop for travelers heading to Portland. Once the Post Office Department recognized its error, it revoked the Campground post office designation.
Gresham was incorporated in 1905, the year of the Lewis and Clark Centennial Exposition; its population at the time was 365. Lewis Shattuck, a member of a pioneer family, served as the first mayor. During that period, trains operated between Gresham and Portland on an hourly schedule. Gresham's early settlers would go on to form the outlying communities of Boring, Sandy, Fairview, and Estacada.
Gresham General Hospital opened in 1959 in downtown Gresham. In 1984, the hospital moved to Stark Street and became Mount Hood Medical Center.
Geography
thumb|right|Johnson Creek in Gresham
According to the United States Census Bureau, the city has a total area of , of which is land and is water. The total area includes parts of Fairview Creek and Johnson Creek.
Gresham is characterized by hills on its eastern border. Northeast Gresham is also hilly, especially where the city meets Troutdale toward the Columbia River. Its elevation is .
Climate
Gresham, like most of western Oregon, has a Mediterranean climate (Köppen Csb/Csa). Summers feature pleasant mornings, very warm and sunny afternoons and only very occasional rainfall, whereas winters are cloudy with cool to cold afternoons, occasional frosts, and frequent long rainy periods.