Tinley Park, Illinois demographics

Tinley Park, IL demographics: median age 43.2; 37.0% of adults 25+ hold a bachelor’s degree. Age, race, households, languages and education, ACS 2020–2024 with margins of error.

ACS 2020–2024 · Tinley Park village, Illinois · Incorporated village · GEOID 1775484. The survey estimates a population of 54,842 for its five-year window. This is separate from the annual July 2025 population estimate on the city overview.

Median age in Tinley Park is 43.2 years, with a 90% margin of error of 1.8 years. There are 22,320 households (±641). 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	43.2 ±1.8	39.0 ±0.1	38.9 ±0.1

Age groups · B01001 · ACS 2020–2024 Total population: 54,842
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Under 18	11,228 ±912	20.5% ±1.7 pp	21.8%	22.0%
18–34	10,428 ±897	19.0% ±1.6 pp	22.7%	22.8%
35–64	21,378 ±1,183	39.0% ±2.2 pp	38.5%	38.0%
65 and older	11,808 ±823	21.5% ±1.5 pp	17.0%	17.2%

Sex categories as published by ACS · B01001 · ACS 2020–2024 Total population: 54,842
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Male	26,751 ±690	48.8% ±1.3 pp	49.4%	49.5%
Female	28,091 ±687	51.2% ±1.3 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: 54,842
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
White alone	42,552 ±1,357	77.6% ±2.5 pp	61.0%	61.0%
Black or African American alone	3,654 ±682	6.7% ±1.2 pp	13.6%	12.2%
American Indian and Alaska Native alone	19 ±20 · low precision	0.0% ±0.0 pp · low precision	0.6%	0.9%
Asian alone	2,017 ±521	3.7% ±0.9 pp	6.0%	6.0%
Native Hawaiian and Other Pacific Islander alone	0 ±30 · low precision	0.0% ±0.1 pp · low precision	0.0%	0.2%
Some other race alone	1,972 ±783	3.6% ±1.4 pp	7.9%	7.1%
Two or more races	4,628 ±734	8.4% ±1.3 pp	10.9%	12.6%

Hispanic or Latino origin · B03003 · ACS 2020–2024 Total population: 54,842
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Not Hispanic or Latino	48,891 ±956	89.1% ±1.7 pp	81.2%	80.7%
Hispanic or Latino	5,951 ±947	10.9% ±1.7 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: 22,320
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Married-couple family	11,675 ±446	52.3% ±1.3 pp	45.3%	46.9%
Other family: male householder, no spouse present	777 ±230	3.5% ±1.0 pp	4.9%	5.1%
Other family: female householder, no spouse present	2,454 ±431	11.0% ±1.9 pp	11.9%	12.2%
Nonfamily: householder living alone	6,591 ±750	29.5% ±3.3 pp	31.2%	28.7%
Nonfamily: householder not living alone	823 ±216	3.7% ±1.0 pp	6.7%	7.0%

Households with children · B11005 · ACS 2020–2024 Households: 22,320
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Households with people under 18	5,871 ±408	26.3% ±1.7 pp	28.6%	29.5%
Households without people under 18	16,449 ±892	73.7% ±3.4 pp	71.4%	70.5%

Household size · B11016 · ACS 2020–2024 Households: 22,320
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
One-person nonfamily households	6,591 ±750	29.5% ±3.3 pp	31.2%	28.7%
Two-person households	7,152 ±632	32.0% ±2.7 pp	32.3%	33.8%
Three-person households	3,527 ±517	15.8% ±2.3 pp	14.7%	15.3%
Four-person households	3,079 ±358	13.8% ±1.6 pp	12.6%	12.6%
Five-person households	1,435 ±322	6.4% ±1.4 pp	5.8%	5.9%
Six-person households	306 ±145	1.4% ±0.6 pp	2.1%	2.2%
Seven or more people	230 ±113	1.0% ±0.5 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: 54,842
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Native	49,724 ±869	90.7% ±1.6 pp	85.3%	85.9%
Foreign born	5,118 ±867	9.3% ±1.6 pp	14.7%	14.1%

Language spoken at home · C16001 · ACS 2020–2024 Population age 5 and older: 52,196
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
English only	43,890 ±1,327	84.1% ±2.4 pp	76.0%	77.7%
Spanish	2,627 ±747	5.0% ±1.4 pp	14.0%	13.6%
French, Haitian, or Cajun	145 ±175 · low precision	0.3% ±0.3 pp · low precision	0.3%	0.7%
German or other West Germanic	115 ±85 · low precision	0.2% ±0.2 pp · low precision	0.3%	0.5%
Russian, Polish, or other Slavic	570 ±201	1.1% ±0.4 pp	2.5%	0.7%
Other Indo-European	833 ±284	1.6% ±0.5 pp	2.6%	2.0%
Korean	31 ±35 · low precision	0.1% ±0.1 pp · low precision	0.3%	0.3%
Chinese, including Mandarin and Cantonese	298 ±253 · low precision	0.6% ±0.5 pp · low precision	0.9%	1.1%
Vietnamese	184 ±235 · low precision	0.4% ±0.5 pp · low precision	0.2%	0.5%
Tagalog, including Filipino	546 ±294 · low precision	1.0% ±0.6 pp · low precision	0.7%	0.6%
Other Asian and Pacific Island	228 ±161 · low precision	0.4% ±0.3 pp · low precision	1.0%	1.1%
Arabic	2,714 ±936	5.2% ±1.8 pp	0.6%	0.5%
Other and unspecified	15 ±23 · low precision	0.0% ±0.0 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: 39,678
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Less than high school graduate	1,629 ±347	4.1% ±0.9 pp	9.5%	10.4%
High school graduate or equivalency	10,087 ±880	25.4% ±2.2 pp	25.1%	26.0%
Some college, no degree	8,973 ±819	22.6% ±2.0 pp	19.2%	19.1%
Associate’s degree	4,307 ±707	10.9% ±1.8 pp	8.3%	8.8%
Bachelor’s degree	8,745 ±779	22.0% ±1.9 pp	22.6%	21.6%
Graduate or professional degree	5,937 ±725	15.0% ±1.8 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: 54,324
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Same house	49,953 ±1,126	92.0% ±2.0 pp	88.9%	87.7%
Moved within same county	3,182 ±930	5.9% ±1.7 pp	6.4%	6.3%
Moved from a different county in the same state	554 ±320 · low precision	1.0% ±0.6 pp · low precision	2.4%	3.1%
Moved from a different state	378 ±219 · low precision	0.7% ±0.4 pp · low precision	1.6%	2.3%
Moved from abroad	257 ±216 · low precision	0.5% ±0.4 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

3.7% of Tinley Park residents (±0.8 percentage points) had no health insurance coverage when surveyed, compared with 6.9% in Illinois and 8.4% nationally. 93.7% 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	Tinley Park	Illinois	U.S.	Compared with Illinois
People without health insurance Civilian noninstitutionalized population	3.7% ±0.8 pp	6.9%	8.4%	Lower
Households with a broadband subscription Households	93.7% ±0.4 pp	90.8%	91.0%	Higher
Veterans Civilian population age 18 and older	5.6% ±0.9 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 Tinley Park . 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 Tinley Park housing and cost context or return to the city profile.