Seneca Flag

Seneca

County:
Nemaha County
County Seat:
Yes
Area (mi²):
1.788
State:
Kansas

Seneca is a city located in Nemaha County, Kansas. Seneca has a 2025 population of 2,140 . It is also the county seat of Nemaha County . Seneca is currently declining at a rate of -0.05% annually and its population has decreased by -0.09% since the most recent census, which recorded a population of 2,142 in 2020.

The average household income in Seneca is $88,715 with a poverty rate of 8.52%. The median age in Seneca is 42.9 years: 39 years for males, and 50.3 years for females. For every 100 females there are 113.9 males.

2.1K
Total Population
1,197
Density (mi²)
-1 -0.05%
Growth

Seneca Population

Seneca Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Seneca includes 97.71% White, and smaller percentages for Two or more races, other race, Black or African American, Native American and multiracial populations.

Population by Race

White (97.71%)

Two or more races (1.08%)

Other race (1.03%)

Black or African American (0.14%)

Native American (0.05%)

Race
Population
Percentage (of total)
White2,09097.71%
Two or more races231.08%
Other race221.03%
Black or African American30.14%
Native American10.05%

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 $44,398. Household income levels show a median of $70,221. The poverty rate stands at 8.52%.

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
Married Families$104,167-
Families$99,737$111,576
Households$70,221$88,715
Non Families$41,583$47,843

$44,398

Average Income

$70,221

Median Household Income

8.52%

Poverty Rate

Nearby Cities

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)