Ottawa Flag

Ottawa

County:
LaSalle County
County Seat:
Yes
Area (mi²):
15.183
State:
Illinois

Ottawa is located in LaSalle County, Illinois. Ottawa has a 2025 population of 11,224 . It is also the county seat of LaSalle County . Ottawa is currently growing at a rate of 0.12% annually but its population has decreased by -0.35% since the most recent census, which recorded a population of 11,263 in 2020.

The average household income in Ottawa is $95,526 with a poverty rate of 14.97%. The median age in Ottawa is 44.3 years: 44.2 years for males, and 44.9 years for females. For every 100 females there are 99.3 males.

11.2K
Total Population
739
Density (mi²)
13 0.12%
Growth

Ottawa Population

Ottawa Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Ottawa includes 85.97% White, 3.13% Black or African American, 3.08% other race, and smaller percentages for Asian, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White (85.97%)

Two or more races (6.62%)

Black or African American (3.13%)

Other race (3.08%)

Asian (1.15%)

Native Hawaiian or Pacific Islander (0.05%)

Race
Population
Percentage (of total)
White9,63985.97%
Two or more races7426.62%
Black or African American3513.13%
Other race3453.08%
Asian1291.15%
Native Hawaiian or Pacific Islander60.05%

Ottawa Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Ottawa's average per capita income is $43,750. Household income levels show a median of $69,123. The poverty rate stands at 14.97%.

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$100,804-
Families$77,353$104,850
Households$69,123$95,526
Non Families$45,331$77,820

$43,750

Average Income

$69,123

Median Household Income

14.97%

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)