Ottawa, Illinois Population 2021

17,951
map placeholder

Ottawa is a city located in Illinois. With a 2020 population of 17,951, it is the 140th largest city in Illinois and the 2026th largest city in the United States . Ottawa is currently declining at a rate of -0.31% annually and its population has decreased by -4.35% since the most recent census, which recorded a population of 18,768 in 2010. Ottawa reached it's highest population of 19,408 in 1960. Spanning over 14 miles, Ottawa has a population density of 1,403 people per square mile.

The average household income in Ottawa is $65,160 with a poverty rate of 17.11%. The median rental costs in recent years comes to $819 per month, and the median house value is $128,000. The median age in Ottawa is 38.7 years, 35.3 years for males, and 41.7 years for females.

Ottawa Demographics

According to the most recent ACS, the racial composition of Ottawa was:

  • White: 89.76%
  • Black or African American: 4.23%
  • Two or more races: 2.99%
  • Other race: 1.96%
  • Asian: 0.83%
  • Native American: 0.23%
  • Native Hawaiian or Pacific Islander: 0.00%
The current population of Ottawa, Illinois is 17,951 based on our projections of the latest US Census estimates. The US Census estimates the 2018 population at 18,119.The last official US Census in 2010 recorded the population at 18,768.

Ottawa, Illinois Population 2021

Population by Race

Race Population Percentage
White16,86889.76%
Black or African American7944.23%
Two or More Races5622.99%
Some Other Race3681.96%
Asian1560.83%
American Indian and Alaska Native440.23%
Loading...

Ottawa Population by Race

Ottawa Population Pyramid $2021

Loading...

Ottawa Median Age

38.7


Total

35.3


Male

41.7


Female

Ottawa Adults

There are 14,530 adults, (3,362 of whom are seniors) in Ottawa.

Ottawa Age Dependency

68.3

Age Dependency Ratio

30.1

Old Age Dependency Ratio

38.2

Child Dependency Ratio

Ottawa Sex Ratio

Female

10,069

53.58%

Male

8,723

46.42%

Ottawa Population by Age

Ottawa Renter vs Owner Occupied by Household Type

Loading...

Ottawa Household Types

Type Owner Renter
Married78.5%21.5%
All60.2%39.8%
Male59.3%40.7%
Non Family50.3%49.7%
Female37.4%62.6%

60.2%

Rate of Home Ownership

Ottawa Households and Families

Type Count Average Size Owned
All8,0972.2760.2
Married3,327378.5
Non Family3,1361.1650.3
Female1,3103.0537.4
Male3242.4659.3

2.85

Average Family Size

2.27

Average Household Size

Loading...

Ottawa Households by Type

Loading...
Education Attained Count Percentage
Less Than 9th Grade4013.12%
9th to 12th Grade1,1358.83%
High School Graduate4,53335.25%
Some College2,98523.21%
Associates Degree1,2329.58%
Bachelors Degree1,58912.36%
Graduate Degree9847.65%
Loading...

Ottawa Educational Attainment by Sex (over 25)

Ottawa Educational Attainment by Race

Loading...
Race Total High School Bachelors
White11,11710,0782,353
Hispanic1,043709128
Black40226626
Other Race25112624
2+ Races19518029
Asian909037
Native American2311

The highest rate of high school graduation is among asian people with a rate of 100.00%.

The highest rate of bachelors degrees is among asian people with a rate of 41.11%.

Ottawa Educational Attainment by Race

Loading...
Name Average Male Female
Overall$33,750$43,069$27,440
Less Than 9th Grade$16,998$17,257$16,176
High School Graduate$26,344$32,491$21,667
Some College$36,605$54,270$29,174
Bachelors Degree$46,469$52,250$42,895
Graduate Degree$65,947$97,375$56,912

$33,750

Average Earnings

$43,069

Average Male

$27,440

Average Female

Ottawa Earnings by Educational Attainment

Ottawa Language by Age

Loading...

Ottawa Language

91.73% of Ottawa residents speak only English, while 8.27% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 5.07% of the population.

Ottawa Language

Ottawa Poverty by Race

Loading...
Name Total In Poverty Poverty Rate
White15,1272,12614.05%
Hispanic1,83652028.32%
Black74124833.47%
Multiple55723241.65%
Other36811029.89%
Asian1563421.79%

17.11%

Overall Poverty Rate

15.07%

Male Poverty Rate

18.87%

Female Poverty Rate

Poverty in Ottawa

The race most likely to be in poverty in Ottawa is Multiple, with 41.65% below the poverty level.

The race least likely to be in poverty in Ottawa is White, with 14.05% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 5.16%. Among those working part-time, it was 18.58%, and for those that did not work, the poverty rate was 23.21%.

Ottawa Poverty

Loading...
Name Poverty
Less Than 9th Grade17.59%
Some College15.46%
High School14.63%
Bachelors or Greater5.45%

Ottawa Poverty Rate by Education

Loading...
Rate Poverty
Female Unemployed48.37%
Male Unemployed46.67%
Female Employed12.86%
Male Employed6.30%

Ottawa Poverty Rate by Employment Status and Sex

Ottawa Income by Household Type

Loading...
Name Median Mean
Households$51,288$65,160
Families$64,861$78,821
Married Families$76,141-
Non Families$32,538$41,597
Loading...

Income by Household Type

Ottawa Marital Status

Loading...

Marriage Rates

45.9%

Overall Marriage Rate

49.6%

Male Marriage Rate

42.8%

Female Marriage Rate

Ottawa Married by Age and Sex

Loading...

Ottawa Marriage

The age group where males are most likely to be married is 55-64, while the female age group most likely to be married is 55-64.

Ottawa Marital Status by Race

Loading...

Ottawa Marital Status

Loading...

978

Number of Veterans

950

Male Veterans

28

Female Veterans

War Veterans
Vietnam339
First Gulf War151
Second Gulf War111
Korea94
World War II66

Ottawa Veterans by War

Loading...
Age Group Veterans
65 to 74296
75+274
35 to 54242
55 to 64127
18 to 3439

Ottawa Veterans by Age

Loading...
Name Veterans % of Total
White9647.22%
Hispanic141.22%
Black142.62%

Ottawa Veterans by Race

Ottawa Veterans by Education

Loading...

2.86%

Veteran Poverty Rate

33.76%

Veteran Disability Rate

Ottawa Veterans by Education

Loading...

64.8%

Labor Force Participation

60.6%

Employment Rate

6.2%

Unemployment Rate

Ottawa Employment by Age

Loading...

Ottawa Employment by Race

Loading...

Ottawa Employment by Education

Origin of Non-Citizens

Loading...

Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

Loading...

79.99%

Born in Ottawa

95.76%

Native Born

4.24%

Foreign Born

1.85%

Non Citizen

2.39%

Naturalized

Place of Birth

95.76% of Ottawa residents were born in the United States, with 79.99% having been born in Illinois. 1.85% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Ottawa Place of Birth

Year Population Growth Annual Growth Rate
202117,951-56-0.31%
202018,007-56-0.31%
201918,063-56-0.31%
201818,119-52-0.29%
201718,171-72-0.39%
201618,243-95-0.52%
201518,338-103-0.56%
201418,441-94-0.51%
201318,535-47-0.25%
201218,582-117-0.63%
201118,699-102-0.54%
201018,8014940.27%
200018,3078560.48%
199017,451-715-0.40%
198018,166-550-0.30%
197018,716-692-0.36%
196019,4082,4511.36%
195016,9579520.58%
194016,0059110.59%
193015,0944,2783.39%
192010,8161,2811.27%
19109,535-1,053-1.04%
190010,5886030.59%
18909,9852,1512.46%
18807,834980.13%
18707,7360.00%

Ottawa Population by Year