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 2026 population of 2,140. It is also the county seat of Nemaha County. Seneca is currently declining at a rate of 0% annually and its population has decreased by -0.09% since the most recent census, which recorded a population of 2,142 in 2020.

The median household income in Seneca is $76,750 with a poverty rate of 8.01%. The median age in Seneca is 51.8 years: 48.1 years for males, and 58.6 years for females. For every 100 females there are 104.7 males.

2.1K
Total Population
1,197
Density (mi²)

Seneca Population

Seneca Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
20262,14000%
20252,140-1-0.05%
20242,14130.14%
20232,138-1-0.05%
20222,13910.05%
20212,138-4-0.19%
20202,14240.19%
20192,061261.28%
20182,03590.44%
20172,026-2-0.1%
20162,028120.6%
20152,016140.7%
20142,00270.35%
20131,99580.4%
20121,987-5-0.25%
20111,99210.05%
20102,002-2-0.1%

Median Age

Overall: 51.8 years
Female: 58.6 years
Male: 48.1 years

Seneca Adults

There are 1,652 adults, (617 of whom are seniors) in Seneca.

Sex Ratio

Female: 1,021 (48.9%)
Male: 1,069 (51.1%)

Demographics

The racial composition of Seneca includes 98.09% White, and smaller percentages for other race, Two or more races, Black or African American and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White2,05098.09%
Other race271.29%
Two or more races90.43%
Black or African American40.19%
Race
Population ↓
Percentage (of total)
White492.34%
Two or more races50.24%
Race
Population ↓
Percentage (of total)
White2,00195.74%
Other race271.29%
Two or more races40.19%
Black or African American40.19%

Seneca Marital Status

Economics and Income Statistics

Seneca 's average per capita income is $46,200. Household income levels show a median of $76,750. The poverty rate stands at 8.01%.

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$108,523-
Families$106,458$134,576
Households$76,750$102,565
Non Families$41,250$44,551

$46,200

Average Income

$76,750

Median Household Income

8.01%

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)