Carol Stream, Illinois demographics

Carol Stream, IL demographics: median age 40.4; 42.8% of adults 25+ hold a bachelor’s degree. Age, race, households, languages and education, ACS 2020–2024 with margins of error.

ACS 2020–2024 · Carol Stream village, Illinois · Incorporated village · GEOID 1711332. The survey estimates a population of 39,460 for its five-year window. This is separate from the annual July 2025 population estimate on the city overview.

Median age in Carol Stream is 40.4 years, with a 90% margin of error of 1.4 years. There are 14,487 households (±434). Age and household distributions show how these totals are composed; they do not establish which neighborhood suits a particular person.

Every count and share is an estimate. “±” is a 90% margin of error (MOE); pp means percentage points. Derived shares use the category count divided by the named universe. Aggregated category MOEs and percentage MOEs are approximate. A margin larger than half its estimate is flagged as low precision. Blank source uncertainty is shown as unavailable, never zero.

Age distribution and sex

City, state and U.S. estimates · ACS 2020–2024
Measure / survey universe	City estimate ± MOE	State estimate ± MOE	U.S. estimate ± MOE
Median age Total population · years	40.4 ±1.4	39.0 ±0.1	38.9 ±0.1

Age groups · B01001 · ACS 2020–2024 Total population: 39,460
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Under 18	8,137 ±614	20.6% ±1.6 pp	21.8%	22.0%
18–34	8,666 ±735	22.0% ±1.9 pp	22.7%	22.8%
35–64	15,984 ±861	40.5% ±2.2 pp	38.5%	38.0%
65 and older	6,673 ±638	16.9% ±1.6 pp	17.0%	17.2%

Sex categories as published by ACS · B01001 · ACS 2020–2024 Total population: 39,460
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Male	19,611 ±592	49.7% ±1.5 pp	49.4%	49.5%
Female	19,849 ±600	50.3% ±1.5 pp	50.6%	50.5%

The age groups are mutually exclusive and cover the entire population. The sex categories follow this ACS table’s published classification; they are not a survey of gender identity.

Race and Hispanic origin

Race · B02001 · ACS 2020–2024 Total population: 39,460
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
White alone	20,411 ±1,109	51.7% ±2.8 pp	61.0%	61.0%
Black or African American alone	2,501 ±739	6.3% ±1.9 pp	13.6%	12.2%
American Indian and Alaska Native alone	283 ±170 · low precision	0.7% ±0.4 pp · low precision	0.6%	0.9%
Asian alone	7,663 ±1,056	19.4% ±2.7 pp	6.0%	6.0%
Native Hawaiian and Other Pacific Islander alone	85 ±58 · low precision	0.2% ±0.1 pp · low precision	0.0%	0.2%
Some other race alone	3,354 ±1,004	8.5% ±2.5 pp	7.9%	7.1%
Two or more races	5,163 ±906	13.1% ±2.3 pp	10.9%	12.6%

Hispanic or Latino origin · B03003 · ACS 2020–2024 Total population: 39,460
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Not Hispanic or Latino	32,179 ±1,113	81.5% ±2.8 pp	81.2%	80.7%
Hispanic or Latino	7,281 ±1,117	18.5% ±2.8 pp	18.8%	19.3%

Hispanic origin and race are separate questions. People of Hispanic or Latino origin may be of any race and appear in both tables. Do not add the Hispanic share to race shares. Race alone and two-or-more-race groups are the mutually exclusive categories of the race table.

Household types, children and living alone

Household types · B11001 · ACS 2020–2024 Households: 14,487
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Married-couple family	8,206 ±381	56.6% ±2.0 pp	45.3%	46.9%
Other family: male householder, no spouse present	477 ±137	3.3% ±0.9 pp	4.9%	5.1%
Other family: female householder, no spouse present	1,640 ±295	11.3% ±2.0 pp	11.9%	12.2%
Nonfamily: householder living alone	3,449 ±478	23.8% ±3.2 pp	31.2%	28.7%
Nonfamily: householder not living alone	715 ±150	4.9% ±1.0 pp	6.7%	7.0%

Households with children · B11005 · ACS 2020–2024 Households: 14,487
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Households with people under 18	4,256 ±260	29.4% ±1.6 pp	28.6%	29.5%
Households without people under 18	10,231 ±512	70.6% ±2.8 pp	71.4%	70.5%

Household size · B11016 · ACS 2020–2024 Households: 14,487
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
One-person nonfamily households	3,449 ±478	23.8% ±3.2 pp	31.2%	28.7%
Two-person households	4,205 ±355	29.0% ±2.3 pp	32.3%	33.8%
Three-person households	3,007 ±401	20.8% ±2.7 pp	14.7%	15.3%
Four-person households	2,333 ±313	16.1% ±2.1 pp	12.6%	12.6%
Five-person households	914 ±164	6.3% ±1.1 pp	5.8%	5.9%
Six-person households	395 ±131	2.7% ±0.9 pp	2.1%	2.2%
Seven or more people	184 ±98 · low precision	1.3% ±0.7 pp · low precision	1.3%	1.4%

A family household contains related people under the Census definition. A nonfamily household can contain one person or unrelated people sharing a home. Households with children can also appear in the household-type and size tables, so those tables must not be added together. Household estimates exclude people living in group quarters from the household universe.

Nativity and languages spoken at home

Nativity · B05002 · ACS 2020–2024 Total population: 39,460
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Native	28,347 ±920	71.8% ±2.3 pp	85.3%	85.9%
Foreign born	11,113 ±935	28.2% ±2.4 pp	14.7%	14.1%

Language spoken at home · C16001 · ACS 2020–2024 Population age 5 and older: 37,407
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
English only	22,123 ±1,149	59.1% ±3.0 pp	76.0%	77.7%
Spanish	5,687 ±1,056	15.2% ±2.8 pp	14.0%	13.6%
French, Haitian, or Cajun	113 ±88 · low precision	0.3% ±0.2 pp · low precision	0.3%	0.7%
German or other West Germanic	78 ±62 · low precision	0.2% ±0.2 pp · low precision	0.3%	0.5%
Russian, Polish, or other Slavic	1,731 ±537	4.6% ±1.4 pp	2.5%	0.7%
Other Indo-European	4,646 ±911	12.4% ±2.4 pp	2.6%	2.0%
Korean	112 ±96 · low precision	0.3% ±0.3 pp · low precision	0.3%	0.3%
Chinese, including Mandarin and Cantonese	241 ±128 · low precision	0.6% ±0.3 pp · low precision	0.9%	1.1%
Vietnamese	564 ±268	1.5% ±0.7 pp	0.2%	0.5%
Tagalog, including Filipino	627 ±238	1.7% ±0.6 pp	0.7%	0.6%
Other Asian and Pacific Island	893 ±321	2.4% ±0.9 pp	1.0%	1.1%
Arabic	234 ±240 · low precision	0.6% ±0.6 pp · low precision	0.6%	0.5%
Other and unspecified	358 ±215 · low precision	1.0% ±0.6 pp · low precision	0.6%	0.8%

Foreign born means not a U.S. citizen at birth; it includes naturalized citizens. Language categories describe speech at home among people age five and older. A language other than English at home does not establish that someone cannot speak English. This city page uses the published C16001 summary categories because the more detailed B16001 table does not provide these city records in this release.

Educational attainment

Highest completed education · B15003 · ACS 2020–2024 Population age 25 and older: 27,713
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Less than high school graduate	2,830 ±434	10.2% ±1.6 pp	9.5%	10.4%
High school graduate or equivalency	5,757 ±667	20.8% ±2.4 pp	25.1%	26.0%
Some college, no degree	5,096 ±590	18.4% ±2.1 pp	19.2%	19.1%
Associate’s degree	2,177 ±368	7.9% ±1.3 pp	8.3%	8.8%
Bachelor’s degree	8,129 ±618	29.3% ±2.2 pp	22.6%	21.6%
Graduate or professional degree	3,724 ±409	13.4% ±1.5 pp	15.3%	14.1%

The denominator excludes residents under 25. Each person is counted in the highest attainment category they completed. This table does not measure the quality of local schools or the education level of every current student.

Residence one year earlier

Geographic mobility · B07003 · ACS 2020–2024 Population age 1 and older: 39,048
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Same house	35,303 ±833	90.4% ±2.1 pp	88.9%	87.7%
Moved within same county	2,074 ±527	5.3% ±1.3 pp	6.4%	6.3%
Moved from a different county in the same state	1,001 ±426	2.6% ±1.1 pp	2.4%	3.1%
Moved from a different state	522 ±483 · low precision	1.3% ±1.2 pp · low precision	1.6%	2.3%
Moved from abroad	148 ±103 · low precision	0.4% ±0.3 pp · low precision	0.6%	0.6%

These are respondents’ residence patterns one year before their survey response, pooled across the five-year window. They are not a net migration count for 2025. A person can move to a different house within the same city or county; moves within the same county should not automatically be interpreted as new arrivals to the city.

Health insurance, internet access and veterans

5.5% of Carol Stream residents (±1.3 percentage points) had no health insurance coverage when surveyed, compared with 6.9% in Illinois and 8.4% nationally. 92.3% of households subscribe to broadband of any type, including cellular data plans. A subscription is not the same as available service: the FCC National Broadband Map shows providers at a specific address.

City, state and U.S. shares · ACS 2020–2024
Measure	Carol Stream	Illinois	U.S.	Compared with Illinois
People without health insurance Civilian noninstitutionalized population	5.5% ±1.3 pp	6.9%	8.4%	Lower
Households with a broadband subscription Households	92.3% ±2.0 pp	90.8%	91.0%	Not statistically different
Veterans Civilian population age 18 and older	3.2% ±0.7 pp	4.8%	6.2%	Lower

Reading and reusing the estimates

The Census table links above lead to the original detailed tables. Counts, source universes and uncertainty are retained in the source observation download for Carol Stream . Compare these figures with the same survey window; do not compare one city’s five-year estimate with another city’s annual estimate as though they measured the same period. For methods, see uncertainty and denominator calculations.

Read Carol Stream housing and cost context or return to the city profile.