The City of Tualatin is twelve miles south of Portland, on the southeastern edge of Washington County and extending into Clackamas County. The town was an early EuroAmerican settlement in the Tualatin Plains, a highly productuve agricultural area with wide, open areas and fertile soil which attracted many emigrants during the mid-nineteenth century. The Atfalati (also known as Tualatin) band of the Kalapuya lived on the Tualatin Plains for centuries. The land’s suitability for farming was partially the result of the Atfalatis’ practice of controlled burning, which they used to clear and maintain large, open areas for foraging and hunting.

By the 1830s, when retired Hudson’s Bay Company employees began to settle on the Plains, Native communities had been decimated by disease. By the 1840s, most of the residents of the area were Oregon Trail emigrants. In the 1850s, they began building a plank road—now called Canyon Road—to connect the Willamette River port at Portland to the Tualatin Plains and its agricultural and lumber products.

By 1853, white settlers had filed some thirty Oregon Donation Land Claims in the area that is present-day Tualatin. They cleared land, constructed covered bridges, cut roads, and built a log school, a smithy, and a store. Starting in 1852, John Taylor operated a ferry across the Tualatin River. He cut and planked a road from the ferry to Portland; called Taylors Ferry Road, it was eventually incorporated into Highway 99W.

The town was named Galbreath in 1853 after an early pioneer family. In 1856, residents changed the name to Bridgeport, reportedly a reference to one of the area’s first permanent bridges across the Tualatin River. The name of the first post office, opened in 1869, was Tualitin.

John Sweek sold land to the Portland & Willamette Railway Company in 1886, platted the northern part of his 320 acres, and named the town Tualatin. His house, which he had built in 1858, is on the National Register of Historic Places. The Southern Pacific Railroad eventually bought the P&WRC line and built a depot. The town soon had a store, a church with a steeple and stained-glass windows, and two saloons.

In 1890, John L. Smith moved to Tualatin, where he established a sawmill and a brickyard and ran a steamboat upriver to fetch logs. When the Oregon Electric Railway built a line through Tualatin in 1906, Smith constructed a large corner store across from the depot and platted a new town center.

The town of Tualatin was incorporated in 1913, which allowed it to tax liquor sold within its jurisdiction. Before long, the town had streetlights, wooden sidewalks, graveled roads, and a gas station. Thad Sweek, John Sweek’s son, was the first mayor. In 1918, the town elected John Nyberg mayor, an office he held for twenty-six years.

As the original Donation Land Claims were divided and sold, the town became ringed with family farms, onion fields, hopyards, dairies, orchards, and hatcheries. Farm work was the primary means of employment during the 1930s, and work in Portland’s shipyards helped many families pay off their mortgages during World War II.

By 1960, the population of Tualatin was 359, city wells were going dry, septic tanks were overflowing, and the river was badly contaminated. With the completion of I-5 through Oregon in 1966, the city began to change. Tualatin named its first city manager, Yvonne Addington, and Mayor Jim Brock recruited local businesses to fund a connection to the Bull Run watershed. Federal grants funded the building of reservoirs and a tertiary sewage treatment plant. Over the next four decades, Tualatin’s population increased to over 27,000 people. In 2013, Legacy Meridian Park Hospital, built in 1973, was the largest employer in Tualatin, with over eight hundred employees.

In the 1990s, Tualatin’s downtown was redeveloped into the Tualatin Commons, a gathering place around a created lake. Ten parks and wetlands comprise over 175 acres in the city. The Tualatin Community Park on the Tualatin River is the site of the annual August Crawfish Festival, started in 1959. Browns Ferry Park, located on land settled by Zenas Brown in 1850, is home to the Willowbrook Summer Arts Program, which Althea Pratt-Broome started in 1982. 

The Tualatin Historical Society continues to accumulate information about Tualatin’s history. Its collections include a half skeleton of a 14,000-year-old mastodon, the sacrum of a giant sloth, and erratics washed down in ice-age floods. These archaeological finds are on exhibit in the City Library and the Tualatin Heritage Center.