Before colonization by European settlers, the Atfalati inhabited the Tualatin Valley in several hunter-gatherer villages including Chachimahiyuk ("Place of aromatic herbs"), near present-day Tigard.
Primary food stuffs included deer, camas root, fish, berries, elk, and various nuts.
To encourage the growth of the camas plant and maintain a habitat beneficial to deer and elk, the group regularly burned the valley floor to discourage the growth of forests, a common practice among the Kalapuya.
The Atfalati spoke the Tualatin-Yamhill (Northern Kalapuya) language, which was one of the three Kalapuyan languages.
Prior to contact with white explorers, traders, and missionaries, the Kalapuya population is believed to have numbered as many as 15,000 people.

Euro-Americans began arriving in the Atfalati's homeland in the early 19th century, and settlers in the 1840s.
As with the other Kalapuyan peoples, the arrival of Euro-Americans led to dramatic social disruptions.
By the 1830s, diseases had decimated the Atfalati.
The tribe had already experienced population decreased from smallpox epidemics in 1782 and 1783.
It is estimated that the band was reduced to a population of around 600 in 1842, and had shrunk to only 60 in 1848.
These upheavals diminished the Atfalati's ability to challenge white encroachment.

Under the terms of a treaty of April 19, 1851, the Atfalatis ceded their lands in return for a small reservation at Wapato Lake as well as "money, clothing, blankets, tools, a few rifles, and a horse for each of their headmen--Kaicut, La Medicine, and Knolah."
At the time of the treaty, there were 65 Atfalatis.
The treaty resulted in the loss of much of the Atfalati's lands, but was preferable to removal east of the Cascade Mountains, which the government initially had demanded.
This treaty, however, was never ratified.
Under continuing pressure, the government and Kalapuya renegotiated a treaty with Oregon Superintendent of Indian Affairs Joel Palmer.
This treaty, the Treaty with the Kalapuya, etc. (
also known as the Willamette Valley Treaty or Dayton Treaty) was signed January 4, 1855 and ratified by Congress, on March 3, 1855 (10 Stat.
1143).
Under the terms of the treaty, the indigenous peoples of the Willamette Valley agreed to remove to a reservation later designated by the federal government as the Grand Ronde reservation in the western part of the Willamette Valley at the foothills of the Oregon Coast Range, sixty miles south of their original homeland.

The Donation Land Claim Act of 1850 promoted homestead settlement in the Oregon territory and encouraged thousands of white settlers to come to the area.
Like many towns in the Willamette Valley, Tigard was settled by several families.
The most noteworthy was the Tigard family, headed by Wilson M. Tigard.
Arriving in the area known as "East Butte" in 1852, the family settled and became involved in organizing and building the East Butte School, a general store (which, starting in 1886, also housed the area's post office) and a meeting hall, and renamed East Butte to "Tigardville" in 1886.
The Evangelical organization built the Emanuel Evangelical Church at the foot of Bull Mountain, south of the Tigard store in 1886.
A blacksmith shop was opened in the 1890s by John Gaarde across from the Tigard Store, and in 1896 a new E. Butte school was opened to handle the growth the community was experiencing from an incoming wave of German settlers.

The period between 1907 and 1910 marked a rapid acceleration in growth as Main Street blossomed with the construction of several new commercial buildings, Germania Hall (a two-story building featuring a restaurant, grocery store, dance hall, and rooms to rent), a shop/post office, and a livery stable.
Limited telephone service began in 1908.

In 1910, the arrival of the Oregon Electric Railway triggered the development of Main Street and pushed Tigardville from being merely a small farming community into a period of growth which would lead to its incorporation as a city in 1961.
The town was renamed Tigard in 1907 by the railroad to gre
Before colonization by European settlers, the Atfalati inhabited the Tualatin Valley in several hunter-gatherer villages including Chachimahiyuk ("Place of aromatic herbs"), near present-day Tigard. Primary food stuffs included deer, camas root, fish, berries, elk, and various nuts. To encourage the growth of the camas plant and maintain a habitat beneficial to deer and elk, the group regularly burned the valley floor to discourage the growth of forests, a common practice among the Kalapuya. The Atfalati spoke the Tualatin-Yamhill (Northern Kalapuya) language, which was one of the three Kalapuyan languages. Prior to contact with white explorers, traders, and missionaries, the Kalapuya population is believed to have numbered as many as 15,000 people.
Euro-Americans began arriving in the Atfalati's homeland in the early 19th century, and settlers in the 1840s. As with the other Kalapuyan peoples, the arrival of Euro-Americans led to dramatic social disruptions. By the 1830s, diseases had decimated the Atfalati. The tribe had already experienced population decreased from smallpox epidemics in 1782 and 1783. It is estimated that the band was reduced to a population of around 600 in 1842, and had shrunk to only 60 in 1848. These upheavals diminished the Atfalati's ability to challenge white encroachment.
Under the terms of a treaty of April 19, 1851, the Atfalatis ceded their lands in return for a small reservation at Wapato Lake as well as "money, clothing, blankets, tools, a few rifles, and a horse for each of their headmen--Kaicut, La Medicine, and Knolah." At the time of the treaty, there were 65 Atfalatis. The treaty resulted in the loss of much of the Atfalati's lands, but was preferable to removal east of the Cascade Mountains, which the government initially had demanded. This treaty, however, was never ratified. Under continuing pressure, the government and Kalapuya renegotiated a treaty with Oregon Superintendent of Indian Affairs Joel Palmer. This treaty, the Treaty with the Kalapuya, etc. (also known as the Willamette Valley Treaty or Dayton Treaty) was signed January 4, 1855 and ratified by Congress, on March 3, 1855 (10 Stat. 1143). Under the terms of the treaty, the indigenous peoples of the Willamette Valley agreed to remove to a reservation later designated by the federal government as the Grand Ronde reservation in the western part of the Willamette Valley at the foothills of the Oregon Coast Range, sixty miles south of their original homeland.
The Donation Land Claim Act of 1850 promoted homestead settlement in the Oregon territory and encouraged thousands of white settlers to come to the area. Like many towns in the Willamette Valley, Tigard was settled by several families. The most noteworthy was the Tigard family, headed by Wilson M. Tigard. Arriving in the area known as "East Butte" in 1852, the family settled and became involved in organizing and building the East Butte School, a general store (which, starting in 1886, also housed the area's post office) and a meeting hall, and renamed East Butte to "Tigardville" in 1886. The Evangelical organization built the Emanuel Evangelical Church at the foot of Bull Mountain, south of the Tigard store in 1886. A blacksmith shop was opened in the 1890s by John Gaarde across from the Tigard Store, and in 1896 a new E. Butte school was opened to handle the growth the community was experiencing from an incoming wave of German settlers.
The period between 1907 and 1910 marked a rapid acceleration in growth as Main Street blossomed with the construction of several new commercial buildings, Germania Hall (a two-story building featuring a restaurant, grocery store, dance hall, and rooms to rent), a shop/post office, and a livery stable. Limited telephone service began in 1908.
In 1910, the arrival of the Oregon Electric Railway triggered the development of Main Street and pushed Tigardville from being merely a small farming community into a period of growth which would lead to its incorporation as a city in 1961. The town was renamed Tigard in 1907 by the railroad to gre
Tigard, Oregon