Ottawa

County:: Franklin County
County Seat:: Yes
Area (mi²):: 10.321
State:: Kansas

Ottawa is a city located in Franklin County, Kansas. Ottawa has a 2025 population of 12,718. It is also the county seat of Franklin County. Ottawa is currently growing at a rate of 0.13% annually and its population has increased by 0.63% since the most recent census, which recorded a population of 12,638 in 2020.

The average household income in Ottawa is $76,532 with a poverty rate of 10.69%. The median age in Ottawa is 36.5 years: 35.1 years for males, and 37.2 years for females.

Demographics

The racial composition of Ottawa includes 90.46% White, and smaller percentages for Black or African American, Asian, other race, Native American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Two or more races

Black or African American

Asian

Other race

Native American

Native Hawaiian or Pacific Islander

Race	Population	Percentage (of total)
White	11,427	90.46%
Two or more races	735	5.82%
Black or African American	174	1.38%
Asian	135	1.07%
Other race	98	0.78%
Native American	63	0.5%
Native Hawaiian or Pacific Islander	0	0%

Ottawa Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Ottawa's average per capita income is $45,744. Household income levels show a median of $64,655. The poverty rate stands at 10.69%.

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	$104,623	-
Families	$89,161	$92,213
Households	$64,655	$76,532
Non Families	$34,130	$43,599

$45,744

Average Income

$64,655

Median Household Income

10.69%

Poverty Rate