District 6 of the Oregon State Senate includes most of Linn County as well as eastern Lane County and a sliver of southern Marion County. It is composed of Oregon House districts 11 and 12. It is currently represented by Republican Cedric Ross Hayden of Fall Creek.

District boundaries have changed over time. Therefore, senators before 2023 may not represent the same constituency as today. From 1993 until 2003, the district covered western Multnomah County; from 2003 until 2013, it covered northern Lane County from Springfield east to Walterville and south to Creswell and Dexter and rural central Linn County surrounding Brownsville and Sweet Home; and from 2013 until 2023, it stayed mostly the same, losing Dexter and Sweet Home but gaining Coburg and Harrisburg.

The current district differs greatly from previous iterations by the inclusion of all of eastern Lane County and all of eastern Linn County up to Lebanon as well as the inclusion of Cottage Grove and Junction City and the loss of most of Springfield, rendering the district substantially more rural in character and conservative in voting patterns.

The results are as follows:^[1]