Jefferson Flag

Jefferson

County:
Marion County
County Seat:
No
Area (mi²):
0.857
State:
Oregon

Jefferson is a city located in Marion County, Oregon. Jefferson has a 2025 population of 3,287 . Jefferson is currently declining at a rate of -0.27% annually and its population has decreased by -1.26% since the most recent census, which recorded a population of 3,329 in 2020.

The average household income in Jefferson is $107,966 with a poverty rate of 8.62%. The median age in Jefferson is 32.3 years: 32.6 years for males, and 32.2 years for females. For every 100 females there are 93.8 males.

3.3K
Total Population
3,837
Density (mi²)
-9 -0.27%
Growth

Jefferson Population

Demographics

Economics and Income Statistics

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)