Demographics · IL
Joliet, IL demographics: 150,445 residents, with a median age of 35.8 years, from the U.S. Census Bureau's American Community Survey 2020–2024 (5-year estimates).
150,445people are estimated in Joliet, at a median age of 35.8 years (American Community Survey 2020–2024 period estimate)
Median age 35.8 years — younger than the U.S. median of 38.9.
ACS 2020–2024 5-year · ACS 5-Year Estimates 2020-2024 (released 2026-01-29)
In Joliet, the largest race group is White (49.9%); 34.2% of residents are Hispanic or Latino (of any race); 15.5% were born outside the United States.
ACS 2020–2024 · B01001 / B01002
The estimated median age in Joliet is 35.8 years (±0.7), compared with the U.S. estimate of 38.9 ± 0.1 years. These are descriptive comparisons, not significance tests. The population is 50.4% ± 0.7 percentage points male and 49.6% ± 0.6 percentage points female. The largest age band is 5 to 17 at 18.6%.
| Age band | People | Share | ± margin |
|---|---|---|---|
| Under 5 | 8,651 | 5.8% ± 0.4 percentage points | ±614 |
| 5 to 17 | 28,012 | 18.6% ± 0.9 percentage points | ±1,313 |
| 18 to 24 | 16,093 | 10.7% ± 0.7 percentage points | ±1,036 |
| 25 to 34 | 20,672 | 13.7% ± 0.7 percentage points | ±1,051 |
| 35 to 44 | 21,351 | 14.2% ± 0.7 percentage points | ±1,044 |
| 45 to 54 | 22,468 | 14.9% ± 0.6 percentage points | ±925 |
| 55 to 64 | 15,879 | 10.6% ± 0.6 percentage points | ±879 |
| 65 to 74 | 11,172 | 7.4% ± 0.5 percentage points | ±769 |
| 75 and over | 6,147 | 4.1% ± 0.3 percentage points | ±469 |
Median age by sex: 34.9 (male) · 36.7 (female).
Shares may not sum to 100% due to rounding. Source: U.S. Census Bureau, ACS 5-Year 2020–2024 (B01001 sex by age, B01002 median age) · place-grain · margins of error at the 90% confidence level · methodology →
ACS 2020–2024 · B02001 / B03003
The largest race group in Joliet is White at 49.9% of the population. Separately, 34.2% of residents are Hispanic or Latino of any race.Race and Hispanic origin are two different questions on the census form, so their shares are reported separately and are not additive.
| Race (alone, or two or more) | People | Share | ± margin |
|---|---|---|---|
| White alone | 75,063 | 49.9% ± 1.3 percentage points | ±1,985 |
| Black or African American alone | 24,480 | 16.3% ± 1.1 percentage points | ±1,658 |
| American Indian & Alaska Native alone | 1,428 | 0.9% ± 0.4 percentage points | ±597 |
| Asian alone | 3,727 | 2.5% ± 0.5 percentage points | ±765 |
| Native Hawaiian & Pacific Islander alone | 54 | 0.0% ± 0.1 percentage points | ±109 · low precision |
| Some other race alone | 21,568 | 14.3% ± 1.3 percentage points | ±1,950 |
| Two or more races | 24,125 | 16.0% ± 1.2 percentage points | ±1,823 |
| Hispanic or Latino (of any race) | 51,435 | 34.2% ± 1.2 percentage points | ±1,848 |
Race shares may not sum to 100% due to rounding; race and Hispanic origin are separate questions and are not additive. Source: U.S. Census Bureau, ACS 5-Year 2020–2024 (B02001 race, B03003 Hispanic or Latino origin) · place-grain · margins of error at the 90% confidence level · methodology →
ACS 2020–2024 · B11001 / B25010
Joliet has 51,055 households. 70.6% are family households and 23.5% are people living alone. The average household holds 2.89 people.
Total households
51,055
ACS 2020–2024 5-yr · B11001
Avg household size
2.89
ACS 2020–2024 5-yr · B25010 · ±0.05
Family households
70.6% ± 0.5 percentage points
Share of all households · B11001
Living alone
23.5% ± 1.6 percentage points
Share of all households · B11001
| Household type | Households | ± margin |
|---|---|---|
| Total households | 51,055 | ±807 |
| Family households | 36,052 | ±621 |
| Nonfamily households | 15,003 | ±835 |
| Householder living alone | 12,008 | ±838 |
Source: U.S. Census Bureau, ACS 5-Year 2020–2024 (B11001 household type, B25010 average household size) · place-grain · methodology →
ACS 2020–2024 · B05002 / C16001
15.5% of Joliet residents were born outside the United States. 71.2% of residents age 5 and over speak only English at home. The most-spoken non-English language at home is Spanish (24.3%).
| Measure | Value | Source / grain |
|---|---|---|
| Foreign-born share | 15.5% ± 0.8 percentage points | 23,331 people · B05002 |
| Speak only English at home (age 5+) | 71.2% ± 1.4 percentage points | C16001 |
| Top non-English language at home | 24.3% ± 1.2 percentage points | Spanish · 34,393 speakers · C16001 |
Source: U.S. Census Bureau, ACS 5-Year 2020–2024 (B05002 place of birth, C16001 language spoken at home) · place-grain · methodology →
ACS 2020–2024 · B15003
25.5% ± 1.3 percentage points of adults age 25 and over in Joliet hold a bachelor's degree or higher. The U.S. estimate is 35.7%.
| Measure | Value | Source / grain |
|---|---|---|
| Bachelor's degree or higher (age 25+) | 25.5% | B15003 lines 22–25 over line 1 · place-grain |
Source: U.S. Census Bureau, ACS 5-Year 2020–2024 (B15003 educational attainment, population 25+) · place-grain · methodology →
Sources · provenance
The GEOID for Joliet is 1738570. Every figure on this page is a place-grain American Community Survey 5-Year 2020–2024 estimate (ACS 5-Year Estimates 2020-2024 (released 2026-01-29)) shown with its margin of error. Full per-dataset detail: /sources/.