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 2,143. It is also the county seat of Nemaha County. Seneca is currently growing at a rate of 0.05% annually and its population has increased by 0.14% since the most recent census, which recorded a population of 2,140 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.

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, Asian, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Two or more races

Other race

Black or African American

Native American

Asian

Native Hawaiian or Pacific Islander

Race	Population	Percentage (of total)
White	2,090	97.71%
Two or more races	23	1.08%
Other race	22	1.03%
Black or African American	3	0.14%
Native American	1	0.05%
Asian	0	0%
Native Hawaiian or Pacific Islander	0	0%

Seneca Marital Status

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