Chicago Heights, Illinois demographics

Chicago Heights, IL demographics: median age 35.2; 20.9% of adults 25+ hold a bachelor’s degree. Age, race, households, languages and education, ACS 2020–2024 with margins of error.

ACS 2020–2024 · Chicago Heights city, Illinois · Incorporated city · GEOID 1714026. The survey estimates a population of 26,736 for its five-year window. This is separate from the annual July 2025 population estimate on the city overview.

Median age in Chicago Heights is 35.2 years, with a 90% margin of error of 2.4 years. There are 9,224 households (±537). 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	35.2 ±2.4	39.0 ±0.1	38.9 ±0.1

Age groups · B01001 · ACS 2020–2024 Total population: 26,736
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Under 18	7,268 ±742	27.2% ±2.8 pp	21.8%	22.0%
18–34	6,006 ±719	22.5% ±2.7 pp	22.7%	22.8%
35–64	9,642 ±829	36.1% ±3.1 pp	38.5%	38.0%
65 and older	3,820 ±484	14.3% ±1.8 pp	17.0%	17.2%

Sex categories as published by ACS · B01001 · ACS 2020–2024 Total population: 26,736
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Male	12,910 ±612	48.3% ±2.3 pp	49.4%	49.5%
Female	13,826 ±615	51.7% ±2.3 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: 26,736
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
White alone	6,822 ±957	25.5% ±3.6 pp	61.0%	61.0%
Black or African American alone	11,053 ±1,292	41.3% ±4.8 pp	13.6%	12.2%
American Indian and Alaska Native alone	538 ±278 · low precision	2.0% ±1.0 pp · low precision	0.6%	0.9%
Asian alone	87 ±61 · low precision	0.3% ±0.2 pp · low precision	6.0%	6.0%
Native Hawaiian and Other Pacific Islander alone	0 ±24 · low precision	0.0% ±0.1 pp · low precision	0.0%	0.2%
Some other race alone	4,558 ±1,042	17.0% ±3.9 pp	7.9%	7.1%
Two or more races	3,678 ±871	13.8% ±3.3 pp	10.9%	12.6%

Hispanic or Latino origin · B03003 · ACS 2020–2024 Total population: 26,736
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Not Hispanic or Latino	17,255 ±1,187	64.5% ±4.4 pp	81.2%	80.7%
Hispanic or Latino	9,481 ±1,186	35.5% ±4.4 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: 9,224
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Married-couple family	3,145 ±357	34.1% ±3.3 pp	45.3%	46.9%
Other family: male householder, no spouse present	586 ±190	6.4% ±2.0 pp	4.9%	5.1%
Other family: female householder, no spouse present	2,169 ±359	23.5% ±3.6 pp	11.9%	12.2%
Nonfamily: householder living alone	2,862 ±578	31.0% ±6.0 pp	31.2%	28.7%
Nonfamily: householder not living alone	462 ±143	5.0% ±1.5 pp	6.7%	7.0%

Households with children · B11005 · ACS 2020–2024 Households: 9,224
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Households with people under 18	3,449 ±260	37.4% ±1.8 pp	28.6%	29.5%
Households without people under 18	5,775 ±662	62.6% ±6.2 pp	71.4%	70.5%

Household size · B11016 · ACS 2020–2024 Households: 9,224
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
One-person nonfamily households	2,862 ±578	31.0% ±6.0 pp	31.2%	28.7%
Two-person households	2,235 ±398	24.2% ±4.1 pp	32.3%	33.8%
Three-person households	1,416 ±310	15.4% ±3.2 pp	14.7%	15.3%
Four-person households	1,150 ±276	12.5% ±2.9 pp	12.6%	12.6%
Five-person households	924 ±174	10.0% ±1.8 pp	5.8%	5.9%
Six-person households	383 ±138	4.2% ±1.5 pp	2.1%	2.2%
Seven or more people	254 ±122	2.8% ±1.3 pp	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: 26,736
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Native	22,796 ±741	85.3% ±2.8 pp	85.3%	85.9%
Foreign born	3,940 ±744	14.7% ±2.8 pp	14.7%	14.1%

Language spoken at home · C16001 · ACS 2020–2024 Population age 5 and older: 25,060
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
English only	17,246 ±1,065	68.8% ±4.1 pp	76.0%	77.7%
Spanish	6,741 ±991	26.9% ±3.9 pp	14.0%	13.6%
French, Haitian, or Cajun	17 ±25 · low precision	0.1% ±0.1 pp · low precision	0.3%	0.7%
German or other West Germanic	14 ±22 · low precision	0.1% ±0.1 pp · low precision	0.3%	0.5%
Russian, Polish, or other Slavic	375 ±340 · low precision	1.5% ±1.4 pp · low precision	2.5%	0.7%
Other Indo-European	379 ±263 · low precision	1.5% ±1.0 pp · low precision	2.6%	2.0%
Korean	0 ±24 · low precision	0.0% ±0.1 pp · low precision	0.3%	0.3%
Chinese, including Mandarin and Cantonese	8 ±18 · low precision	0.0% ±0.1 pp · low precision	0.9%	1.1%
Vietnamese	0 ±24 · low precision	0.0% ±0.1 pp · low precision	0.2%	0.5%
Tagalog, including Filipino	0 ±24 · low precision	0.0% ±0.1 pp · low precision	0.7%	0.6%
Other Asian and Pacific Island	105 ±79 · low precision	0.4% ±0.3 pp · low precision	1.0%	1.1%
Arabic	0 ±24 · low precision	0.0% ±0.1 pp · low precision	0.6%	0.5%
Other and unspecified	175 ±174 · low precision	0.7% ±0.7 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: 16,636
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Less than high school graduate	2,527 ±457	15.2% ±2.7 pp	9.5%	10.4%
High school graduate or equivalency	5,301 ±591	31.9% ±3.3 pp	25.1%	26.0%
Some college, no degree	3,926 ±512	23.6% ±2.9 pp	19.2%	19.1%
Associate’s degree	1,413 ±288	8.5% ±1.7 pp	8.3%	8.8%
Bachelor’s degree	2,420 ±402	14.5% ±2.3 pp	22.6%	21.6%
Graduate or professional degree	1,049 ±232	6.3% ±1.4 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: 26,494
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Same house	24,077 ±790	90.9% ±2.9 pp	88.9%	87.7%
Moved within same county	1,837 ±581	6.9% ±2.2 pp	6.4%	6.3%
Moved from a different county in the same state	114 ±129 · low precision	0.4% ±0.5 pp · low precision	2.4%	3.1%
Moved from a different state	128 ±99 · low precision	0.5% ±0.4 pp · low precision	1.6%	2.3%
Moved from abroad	338 ±451 · low precision	1.3% ±1.7 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

11.8% of Chicago Heights residents (±2.2 percentage points) had no health insurance coverage when surveyed, compared with 6.9% in Illinois and 8.4% nationally. 87.5% 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	Chicago Heights	Illinois	U.S.	Compared with Illinois
People without health insurance Civilian noninstitutionalized population	11.8% ±2.2 pp	6.9%	8.4%	Higher
Households with a broadband subscription Households	87.5% ±1.9 pp	90.8%	91.0%	Lower
Veterans Civilian population age 18 and older	4.9% ±1.0 pp	4.8%	6.2%	Not statistically different

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 Chicago Heights . 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 Chicago Heights housing and cost context or return to the city profile.