Northern Kalapuyan is a Kalapuyan language indigenous to northwestern Oregon

Oregon

Oregon is a state in the Pacific Northwest region of the United States. It is located on the Pacific coast, with Washington to the north, California to the south, Nevada on the southeast and Idaho to the east. The Columbia and Snake rivers delineate much of Oregon's northern and eastern...

 in the United States

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

. It was spoken by Kalapuya groups in the northern Willamette Valley

Willamette Valley

The Willamette Valley is the most populated region in the state of Oregon of the United States. Located in the state's northwest, the region is surrounded by tall mountain ranges to the east, west and south and the valley's floor is broad, flat and fertile because of Ice Age conditions...

 southwest of present-day Portland

Portland, Oregon

Portland is a city located in the Pacific Northwest, near the confluence of the Willamette and Columbia rivers in the U.S. state of Oregon. As of the 2010 Census, it had a population of 583,776, making it the 29th most populous city in the United States...

.

Two distinct dialect

Dialect

The term dialect is used in two distinct ways, even by linguists. One usage refers to a variety of a language that is a characteristic of a particular group of the language's speakers. The term is applied most often to regional speech patterns, but a dialect may also be defined by other factors,...

s of the languages have been identified. The Tualatin dialect was spoken along the Tualatin River

Tualatin River

The Tualatin River is a tributary of the Willamette River located in Oregon in the United States. The river is approximately long, and it drains a fertile farming region called the Tualatin Valley southwest and west of Portland at the northwest corner of the Willamette Valley...

. The Yamhill dialect was spoken along the Yamhill River

Yamhill River

The Yamhill River is an tributary of the Willamette River, in the U.S. state of Oregon. Formed by the confluence of the South Yamhill River and the North Yamhill River about east of McMinnville, it drains part of the Northern Oregon Coast Range...

. The language is closely related to Central Kalapuya

Central Kalapuya language

Central Kalapuyan was a Kalapuyan language indigenous to the central and southern Willamette Valley in Oregon in the United States. It was spoken by various bands of the Kalapuya peoples who inhabited the valley up through the middle of the 19th century. The language is closely related to Northern...

, spoken by related groups in the central and southern Willamette Valley.

Northern Kalapuya is now extinct.