Ottawa Flag

Ottawa

County:
Franklin County
County Seat:
Yes
Area (mi²):
10.662
State:
Kansas

Ottawa is a city located in Franklin County, Kansas. Ottawa has a 2026 population of 12,783. It is also the county seat of Franklin County. Ottawa is currently growing at a rate of 0.2% annually and its population has increased by 1.19% since the most recent census, which recorded a population of 12,633 in 2020.

The median household income in Ottawa is $71,699 with a poverty rate of 9.1%. The median age in Ottawa is 36.9 years: 36.2 years for males, and 37.4 years for females. For every 100 females there are 100.9 males.

12.8K
Total Population
1,199
Density (mi²)
25 0.2%
Growth

Ottawa Population

Ottawa Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
202612,783250.2%
202512,758250.2%
202412,733140.11%
202312,7191100.87%
202212,609-33-0.26%
202112,64290.07%
202012,63380.06%
201912,296-6-0.05%
201812,302-18-0.15%
201712,320340.28%
201612,28660.05%
201512,280-50-0.41%
201412,330-121-0.97%
201312,451-72-0.57%
201212,523-38-0.3%
201112,561-85-0.67%
201012,646-3-0.02%
200011,9211,25411.76%
199010,667-349-3.17%
198011,016-20-0.18%
197011,0363633.4%
196010,6735925.87%
195010,081-112-1.1%
194010,1936306.59%
19309,5635456.04%
19209,0181,36817.88%
19107,65071610.33%
19006,93468610.98%
18906,2482,21654.96%
18804,0321,09137.1%
18702,94100%

Median Age

Overall: 36.9 years
Female: 37.4 years
Male: 36.2 years

Ottawa Adults

There are 9,788 adults, (1,889 of whom are seniors) in Ottawa.

Sex Ratio

Female: 6,312 (49.8%)
Male: 6,366 (50.2%)

Demographics

The racial composition of Ottawa includes 89.63% White, and smaller percentages for Black or African American, Native American, Asian, other race, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White11,36389.63%
Two or more races8466.67%
Black or African American2131.68%
Native American1110.88%
Asian1090.86%
Other race300.24%
Native Hawaiian or Pacific Islander60.05%
Race
Population ↓
Percentage (of total)
Two or more races3292.6%
White3222.54%
Other race300.24%
Race
Population ↓
Percentage (of total)
White11,04187.09%
Two or more races5174.08%
Black or African American2131.68%
Native American1110.88%
Asian1090.86%
Native Hawaiian or Pacific Islander60.05%

Ottawa Marital Status

Economics and Income Statistics

Ottawa 's average per capita income is $46,103. Household income levels show a median of $71,699. The poverty rate stands at 9.1%.

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$102,984-
Families$92,697$93,354
Households$71,699$78,671
Non Families$37,167$48,592

$46,103

Average Income

$71,699

Median Household Income

9.1%

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)