Lake Seneca

County:: Williams County
County Seat:: No
Area (mi²):: 1.42
State:: Ohio

Lake Seneca is a CDP located in Williams County, Ohio. Lake Seneca has a 2025 population of 675. Lake Seneca is currently growing at a rate of 2.12% annually and its population has increased by 2.9% since the most recent census, which recorded a population of 656 in 2020.

The average household income in Lake Seneca is $97,165 with a poverty rate of 5.49%. The median age in Lake Seneca is 52.8 years: 55.3 years for males, and 52.8 years for females.

Demographics

The racial composition of Lake Seneca includes 97.49% White, and smaller percentages for Two or more races, Black or African American, Native American, Asian, Native Hawaiian or Pacific Islander, other race and multiracial populations.

Population by Race

White

Two or more races

Black or African American

Native American

Asian

Native Hawaiian or Pacific Islander

Other race

Race	Population	Percentage (of total)
White	544	97.49%
Two or more races	14	2.51%
Black or African American	0	0%
Native American	0	0%
Asian	0	0%
Native Hawaiian or Pacific Islander	0	0%
Other race	0	0%

Lake Seneca Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Lake Seneca's average per capita income is $46,186. Household income levels show a median of $83,839. The poverty rate stands at 5.49%.

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	$85,185	$103,781
Married Families	$84,643	-
Households	$83,839	$97,165
Non Families	$64,500	$63,356

$46,186

Average Income

$83,839

Median Household Income

5.49%

Poverty Rate