Seneca Flag

Seneca

County:
Faulk County
County Seat:
No
Area (mi²):
0.419
State:
South Dakota

Seneca is a town located in Faulk County, South Dakota. Seneca has a 2025 population of 23. Seneca is currently declining at a rate of 0% annually and its population has increased by 4.55% since the most recent census, which recorded a population of 22 in 2020.

The average household income in Seneca is $34,753 with a poverty rate of 19.23%.The median age in Seneca is 62.8 years: 62.8 years for males, and 64.5 years for females.

23
Total Population
55
Density (mi²)
0 0%
Growth

Seneca Population

Seneca Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Seneca includes 100% White, and smaller percentages for and multiracial populations.

Population by Race

Race
Population
Percentage (of total)
White26100%

Seneca Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Seneca's average per capita income is $19,688. Household income levels show a median of $40,750. The poverty rate stands at 19.23%.

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$53,125$49,850
Households$40,750$34,753
Married Families--
Non Families-$26,518

$19,688

Average Income

$40,750

Median Household Income

19.23%

Poverty Rate

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)