Seneca Flag

Seneca

County:
Grant County
County Seat:
No
Area (mi²):
0.795
State:
Oregon

Seneca is a city located in Grant County, Oregon. Seneca has a 2025 population of 162. Seneca is currently declining at a rate of -0.61% annually and its population has decreased by -2.41% since the most recent census, which recorded a population of 166 in 2020.

The average household income in Seneca is $71,578 with a poverty rate of 10.08%The median age in Seneca is 58.8 years: 60.5 years for males, and 58.5 years for females.

162
Total Population
204
Density (mi²)
-1 -0.61%
Growth

Seneca 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)