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.

Demographics

The racial composition of Seneca includes 81.51% White, 3.36% Native American, and smaller percentages for and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
White	97	81.51%
Two or more races	18	15.13%
Native American	4	3.36%

Seneca Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Seneca's average per capita income is $36,979. Household income levels show a median of $76,250. The poverty rate stands at 10.08%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.

Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.

Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.

Name	Median	Mean
Families	$88,636	$94,635
Married Families	$88,636	-
Households	$76,250	$71,578
Non Families	$57,500	$48,518

$36,979

Average Income

$76,250

Median Household Income

10.08%

Poverty Rate