Jefferson County, Oregon

Jefferson County population, land area and income

Jefferson County had 25,536 residents in the Census Vintage 2024 estimate, on 1,781.7 square miles of land. It ranks 25th of 36 in Oregon by population and 19th by land area. That works out to 14.3 people per square mile, below the US average of 96.3, and in the bottom quarter nationally.

The median county-equivalent in Oregon has 46,128 residents; Jefferson County is somewhat smaller.

Its SAIPE 2023 median household income of $68,419 is above the national county median among 3,143 counties with an estimate.

How Jefferson County's population changed since 2020

Jefferson County gained 958 residents between the July 2020 and July 2024 estimates, a rise of 3.9%. That ranks 5th of 36 in Oregon for growth. The median Oregon county changed by +0.8%, and the state as a whole by +0.7%.

Since the April 2020 estimates base, Jefferson County recorded 1,162 births and 1,262 deaths, a natural change of -100. Net international migration added +28 and net domestic migration, people moving to or from other US counties, came to +1,112. The largest single component was domestic migration, which added 1,112 people.

Where Jefferson County is

The Census internal point of Jefferson County is at 44.645200, -121.178600. It sits in UTM zone 10N. The map shades Oregon's 36 county-equivalents by population change from 2020 to 2024, darker for faster growth, with Jefferson County outlined. Dots are towns of 1,000+ people with residents in it.

Towns in Jefferson County

3 incorporated places of 1,000+ people have residents in Jefferson County, 10,462 people together, or 41% of the county. Each figure counts only the part of the town inside Jefferson County; towns marked "part" extend into another county. The largest is Madras with 7,764.

Counties bordering Jefferson County

The Census 2024 county adjacency file lists 6 neighbors for Jefferson County. The most populous is Marion County, OR, with 352,867 residents. Distances run between Census internal points in a straight line.

• Marion County

  352,867 people

  71 mi WNW

• Deschutes County

  211,535 people

  50 mi S

• Linn County

  132,474 people

  68 mi W

• Crook County

  27,336 people

  52 mi SE

• Wasco County

  26,507 people

  36 mi N

• Wheeler County

  1,456 people

  57 mi E

Distance to Salem and the nearest big city

Salem is 93.0 miles WNW of Jefferson County's internal point in a straight line. The nearest place of 100,000 or more is Bend, OR (population 106,926), 41.1 miles away. The nearest place of 10,000 or more is Redmond, OR (population 37,626), 26.6 miles away.

Jefferson County FIPS code

The FIPS code of Jefferson County is 41031: state code 41 for Oregon plus county code 031. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $68,419.