Joliet, Illinois Population 2020

148,227

Joliet is a city located in Illinois. With a 2020 population of 148,227, it is the 4th largest city in Illinois (after Chicago, Aurora, and Naperville) and the 178th largest city in the United States. Joliet is currently growing at a rate of 0.04% annually and its population has increased by 0.54% since the most recent census, which recorded a population of 147,433 in 2010. Joliet reached it's highest population of 148,227 in 2012. Spanning over 65 miles, Joliet has a population density of 2,311 people per square mile.

The average household income in Joliet is $79,618 with a poverty rate of 11.24%. The median rental costs in recent years comes to $1,011 per month, and the median house value is $172,400. The median age in Joliet is 33.7 years, 33 years for males, and 34.5 years for females. For every 100 females there are 95.9 males.

Located some 30 miles southwest of Chicago in the Kendall and Will counties, Joliet is the third largest city in the state of Illinois, recently overtaking Naperville, and is the county seat of Will County. Joliet is part of the Chicago metro area, known as Chicagoland, which as an estimated population of more than 9.5 million as the country's third-largest metro area.

Population Growth

At the time of Joliet’s incorporation in the 1850s, the population stood at around 2,700. This had exploded by 1860 to over 7,000. The 1890s saw the next largest percentage of growth, with a 7.15% annual growth rate, growing from 11,685 in 1880 to 23,264.

A relatively steady rise continued in the decades to come, until the years between 1970 and 1990 saw a growth rate of -25%. This turned around through the decade up to the year 2000, however, due in no small part to millions of dollars of government spending to revitalize the city. This brought a rise from 76,836 in 1990 to over 106,000 in 2000. Between 2010 and 2011, Joliet was the fastest growing city in the Midwestern United States, and the 18th fastest growing city in the country as a whole. Joliet is expected to continue its modest growth.

Louis Joillet, namesake of the city, and Father Jacques Marquette set up camp along the Des Plaines River on a large mound just outside present day Joliet in 1673. The hill would go on to be called Mound Jolliet, and become a popular site for mining by early settlers.

In the aftermath of the Black Hawk war in 1833, a cabin was built along the Des Plaines River. Over the river from this, the village called “Juliet” was built. The name was changed in 1845 to “Joliet” and was incorporated a second time (after a first attempt was rescinded almost 10 years prior due to residents’ desire to tax expenses) in 1852.

The 1870s saw some of the first steel mills in the entire country being built in Joliet, seeing its previous main commodity stone replaced with steel, earning it the nickname “The City of Steel.” This attracted thousands of southeastern Europeans to Joliet, who also found work on the railway that serviced the mill.

The large labor force allowed the city to attract other industries. Brick companies, horseshoe factories, machine manufacturers, bridge builders, and many more established their businesses in the area, and continued to do so well toward the end of the 20th century.

Today, millions of people visit Joliet for its riverboat casinos and NASCAR racetracks.

Joliet Demographics

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

  • White: 66.21%
  • Black or African American: 16.91%
  • Other race: 11.01%
  • Two or more races: 3.23%
  • Asian: 2.19%
  • Native American: 0.42%
  • Native Hawaiian or Pacific Islander: 0.04%
The current population of Joliet, Illinois is 148,227, based on our projections of the latest US Census estimates. The US Census estimates the 2018 population at 148,099.The last official US Census in 2010 recorded the population at 147,433.

Joliet, Illinois Population 2020

Population by Race

Race Population Percentage
White97,96466.21%
Black or African American25,02416.91%
Some Other Race16,28311.01%
Two or More Races4,7833.23%
Asian3,2342.19%
American Indian and Alaska Native6150.42%
Native Hawaiian and Other Pacific Islander540.04%

Joliet Population Pyramid 2020

Joliet Median Age

33.7


Total

33


Male

34.5


Female

Joliet Adults

There are 106,357 adults, (14,616 of whom are seniors) in Joliet.

Joliet Age Dependency

61.3

Age Dependency Ratio

15.9

Old Age Dependency Ratio

45.3

Child Dependency Ratio

Joliet Sex Ratio

Female

75,513

51.04%

Male

72,444

48.96%

Joliet Households and Families

Joliet Renter vs Owner Occupied by Household Type

Joliet Household Types

Type Owner Renter
Married85.6%14.4%
All70.5%29.5%
Male58.5%41.5%
Non Family56.8%43.2%
Female50.9%49.1%

70.5%

Rate of Home Ownership

Type Count Average Size Owned
All47,3603.0670.5
Married23,8403.7885.6
Non Family13,3021.2656.8
Female7,3123.7650.9
Male2,9063.7158.5

3.66

Average Family Size

3.06

Average Household Size

6.8%

Unmarried (Opposite Sex)

0.1%

Unmarried (Same Sex)

Joliet Education

Education Attained Count Percentage
Less Than 9th Grade7,6218.35%
9th to 12th Grade6,8657.52%
High School Graduate28,48331.20%
Some College20,99023.00%
Associates Degree7,6038.33%
Bachelors Degree13,62714.93%
Graduate Degree6,0896.67%

Joliet Educational Attainment by Race

Name Total High School Bachelors
White49,78346,74114,403
Hispanic23,01013,9231,791
Black15,32813,3542,514
Other Race8,8444,999577
Asian2,1771,945850
Multiple Races1,4031,097247
Native American3352777
Islander54277

The highest rate of high school graduation is among white people with a rate of 93.89%.

The highest rate of bachelors degrees is among asian people with a rate of 39.04%.

Name Average Male Female
Overall$40,306$51,293$30,694
Less Than High School$25,833$32,152$17,957
High School Grad$32,436$42,406$25,648
Some College$40,609$55,705$29,865
Bachelors Degree$56,978$73,510$46,692
Graduate Degree$64,255$77,350$57,994

$40,306

Average Earnings

$51,293

Average Male

$30,694

Average Female

Joliet Language

Joliet Language by Age

Joliet Language

72.10% of Joliet residents speak only English, while 27.90% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 23.47% of the population.

Joliet Poverty

Joliet Poverty by Race

Name Total In Poverty Poverty Rate
Hispanic43,4076,76915.59%
Black24,2404,66919.26%
White71,0633,8695.44%
Other16,2062,34714.48%
Multiple4,65978316.81%
Asian3,16153416.89%
Native608182.96%
Islander541629.63%

11.24%

Overall Poverty Rate

9.73%

Male Poverty Rate

12.68%

Female Poverty Rate

Poverty in Joliet

The race most likely to be in poverty in Joliet is Islander, with 29.63% below the poverty level.

The race least likely to be in poverty in Joliet is Native, with 2.96% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 2.60%. Among those working part-time, it was 12.81%, and for those that did not work, the poverty rate was 17.00%.

Name Poverty
Less Than High School20.59%
High School10.20%
Some College5.49%
Bachelors or Greater3.16%
Name Poverty
Female Unemployed27.68%
Male Unemployed16.98%
Female Employed6.31%
Male Employed4.15%

Joliet Income

Joliet Income by Household Type

Name Median Mean
Households$67,504$79,618
Families$77,341$88,360
Married Families$93,706$102,462
Non Families$37,509$49,870

Joliet Marital Status

Joliet Marital Status

Marriage Rates

46.4%

Overall Marriage Rate

48.3%

Male Marriage Rate

44.5%

Female Marriage Rate

Joliet Married by Age and Sex

Joliet Marriage

The age group where males are most likely to be married is Over 65, while the female age group most likely to be married is 35-44.

Joliet Marital Status by Race

Joliet Veterans

5,799

Number of Veterans

5,353

Male Veterans

446

Female Veterans

War Veterans
Vietnam1,657
First Gulf War1,270
Second Gulf War1,028
Korea531
World War II288
Age Group Veterans
35 to 541,634
55 to 641,270
75+1,216
65 to 741,202
18 to 34477
Name Veterans % of Total
White4,2335.84%
Black1,1716.45%
Hispanic6062.16%
Other1981.80%
2 or More1115.82%
Asian602.47%
Indian267.43%

$Joliet Veterans by Education

7.25%

Veteran Poverty Rate

25.02%

Veteran Disability Rate

Joliet Employment Status

70.5%

Labor Force Participation

66.2%

Employment Rate

6.1%

Unemployment Rate

Joliet Place of Birth

Origin of Non-Citizens

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

Origin of Naturalized Citizens

72.26%

Born in Illinois

85.69%

Native Born

14.31%

Foreign Born

7.88%

Non Citizen

Place of Birth

85.69% of Joliet residents were born in the United States, with 72.26% having been born in Illinois. 7.88% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Year Population Growth Annual Growth Rate
2020148,227640.04%
2019148,163640.04%
2018148,099340.02%
2017148,065640.04%
2016148,0013750.25%
2015147,626-141-0.10%
2014147,767-143-0.10%
2013147,910-317-0.21%
2012148,2273270.22%
2011147,9002460.17%
2010147,65441,4333.35%
2000106,22129,3853.29%
199076,836-1,120-0.14%
198077,956-871-0.11%
197078,82712,0471.67%
196066,78015,1792.61%
195051,6019,2361.99%
194042,365-628-0.15%
193042,9934,5511.13%
192038,4423,7721.04%
191034,6705,3171.68%
190029,3536,0892.35%
189023,26411,6077.15%
188011,6574,3944.84%
18707,2631590.22%
18607,1044,44510.33%
18502,6591010.39%
18402,5580.00%