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 and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
White	544	97.49%
Two or more races	14	2.51%

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