Demographics · IL
Naperville, IL demographics: 150,692 residents, with a median age of 40.4 years, from the U.S. Census Bureau's American Community Survey 2020–2024 (5-year estimates).
150,692 people live in Naperville, at a median age of 40.4 years (American Community Survey 2020–2024, a 5-year average)
Median age 40.4 years — older than the U.S. median of 38.9.
ACS 2020–2024 5-year · ACS 5-Year Estimates 2020-2024 (released 2026-01-29)
In Naperville, the largest race group is White (62.8%); 7.6% of residents are Hispanic or Latino (of any race); 22.5% were born outside the United States.
ACS 2020–2024 · B01001 / B01002
The median age in Naperville is 40.4 years (±0.9), older than the U.S. median of 38.9 years. The population is 49.4% male and 50.6% female. The largest age band is 5 to 17 at 19.1%.
| Age band | People | Share | ± margin |
|---|---|---|---|
| Under 5 | 8,601 | 5.7% | ±776 |
| 5 to 17 | 28,832 | 19.1% | ±1,110 |
| 18 to 24 | 10,163 | 6.7% | ±806 |
| 25 to 34 | 16,604 | 11.0% | ±1,045 |
| 35 to 44 | 21,786 | 14.5% | ±1,035 |
| 45 to 54 | 21,888 | 14.5% | ±991 |
| 55 to 64 | 19,786 | 13.1% | ±907 |
| 65 to 74 | 13,643 | 9.1% | ±790 |
| 75 and over | 9,389 | 6.2% | ±744 |
Median age by sex: 40.2 (male) · 40.7 (female).
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 Naperville is White at 62.8% of the population. Separately, 7.6% 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 | 94,692 | 62.8% | ±1,898 |
| Black or African American alone | 6,505 | 4.3% | ±895 |
| American Indian & Alaska Native alone | 243 | 0.2% | ±97 |
| Asian alone | 33,831 | 22.5% | ±1,680 |
| Native Hawaiian & Pacific Islander alone | 2 | 0.0% | ±4 · low precision |
| Some other race alone | 2,754 | 1.8% | ±543 |
| Two or more races | 12,665 | 8.4% | ±1,190 |
| Hispanic or Latino (of any race) | 11,441 | 7.6% | ±1,440 |
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
Naperville has 54,847 households. 74.8% are family households and 20.4% are people living alone. The average household holds 2.70 people.
Total households
54,847
ACS 2020–2024 5-yr · B11001
Avg household size
2.70
ACS 2020–2024 5-yr · B25010 · ±0.04
Family households
74.8%
Share of all households · B11001
Living alone
20.4%
Share of all households · B11001
| Household type | Households | ± margin |
|---|---|---|
| Total households | 54,847 | ±833 |
| Family households | 41,005 | ±637 |
| Nonfamily households | 13,842 | ±861 |
| Householder living alone | 11,196 | ±869 |
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
22.5% of Naperville residents were born outside the United States. 73.1% of residents age 5 and over speak only English at home. The most-spoken non-English language at home is Other Indo-European (8.3%).
| Measure | Value | Source / grain |
|---|---|---|
| Foreign-born share | 22.5% | 33,896 people · B05002 |
| Speak only English at home (age 5+) | 73.1% | C16001 |
| Top non-English language at home | 8.3% | Other Indo-European · 11,786 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
72.5% of adults age 25 and over in Naperville hold a bachelor's degree or higher (the U.S. share is about 35%).
| Measure | Value | Source / grain |
|---|---|---|
| Bachelor's degree or higher (age 25+) | 72.5% | 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 Naperville is 1751622. 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/.