Granite City, Illinois demographics

Granite City, IL demographics: median age 40.4; 15.6% of adults 25+ hold a bachelor’s degree. Age, race, households, languages and education, ACS 2020–2024 with margins of error.

ACS 2020–2024 · Granite City city, Illinois · Incorporated city · GEOID 1730926. The survey estimates a population of 26,549 for its five-year window. This is separate from the annual July 2025 population estimate on the city overview.

Median age in Granite City is 40.4 years, with a 90% margin of error of 2.3 years. There are 11,562 households (±490). 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 ±2.3	39.0 ±0.1	38.9 ±0.1

Age groups · B01001 · ACS 2020–2024 Total population: 26,549
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Under 18	5,851 ±696	22.0% ±2.6 pp	21.8%	22.0%
18–34	5,069 ±566	19.1% ±2.1 pp	22.7%	22.8%
35–64	10,476 ±813	39.5% ±3.0 pp	38.5%	38.0%
65 and older	5,153 ±506	19.4% ±1.9 pp	17.0%	17.2%

Sex categories as published by ACS · B01001 · ACS 2020–2024 Total population: 26,549
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Male	13,241 ±523	49.9% ±1.8 pp	49.4%	49.5%
Female	13,308 ±478	50.1% ±1.6 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: 26,549
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
White alone	20,457 ±989	77.1% ±3.5 pp	61.0%	61.0%
Black or African American alone	2,451 ±584	9.2% ±2.2 pp	13.6%	12.2%
American Indian and Alaska Native alone	28 ±24 · low precision	0.1% ±0.1 pp · low precision	0.6%	0.9%
Asian alone	345 ±212 · low precision	1.3% ±0.8 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	807 ±360	3.0% ±1.4 pp	7.9%	7.1%
Two or more races	2,461 ±608	9.3% ±2.3 pp	10.9%	12.6%

Hispanic or Latino origin · B03003 · ACS 2020–2024 Total population: 26,549
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Not Hispanic or Latino	23,916 ±794	90.1% ±2.5 pp	81.2%	80.7%
Hispanic or Latino	2,633 ±620	9.9% ±2.3 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: 11,562
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Married-couple family	3,955 ±371	34.2% ±2.9 pp	45.3%	46.9%
Other family: male householder, no spouse present	758 ±207	6.6% ±1.8 pp	4.9%	5.1%
Other family: female householder, no spouse present	1,644 ±304	14.2% ±2.6 pp	11.9%	12.2%
Nonfamily: householder living alone	4,407 ±548	38.1% ±4.5 pp	31.2%	28.7%
Nonfamily: householder not living alone	798 ±197	6.9% ±1.7 pp	6.7%	7.0%

Households with children · B11005 · ACS 2020–2024 Households: 11,562
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Households with people under 18	2,975 ±279	25.7% ±2.2 pp	28.6%	29.5%
Households without people under 18	8,587 ±630	74.3% ±4.4 pp	71.4%	70.5%

Household size · B11016 · ACS 2020–2024 Households: 11,562
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
One-person nonfamily households	4,407 ±548	38.1% ±4.5 pp	31.2%	28.7%
Two-person households	3,684 ±399	31.9% ±3.2 pp	32.3%	33.8%
Three-person households	1,298 ±263	11.2% ±2.2 pp	14.7%	15.3%
Four-person households	1,357 ±269	11.7% ±2.3 pp	12.6%	12.6%
Five-person households	637 ±191	5.5% ±1.6 pp	5.8%	5.9%
Six-person households	86 ±62 · low precision	0.7% ±0.5 pp · low precision	2.1%	2.2%
Seven or more people	93 ±83 · low precision	0.8% ±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: 26,549
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Native	25,451 ±598	95.9% ±1.5 pp	85.3%	85.9%
Foreign born	1,098 ±341	4.1% ±1.3 pp	14.7%	14.1%

Language spoken at home · C16001 · ACS 2020–2024 Population age 5 and older: 25,074
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
English only	22,955 ±905	91.5% ±3.1 pp	76.0%	77.7%
Spanish	1,614 ±568	6.4% ±2.3 pp	14.0%	13.6%
French, Haitian, or Cajun	15 ±23 · low precision	0.1% ±0.1 pp · low precision	0.3%	0.7%
German or other West Germanic	55 ±71 · low precision	0.2% ±0.3 pp · low precision	0.3%	0.5%
Russian, Polish, or other Slavic	1 ±3 · low precision	0.0% ±0.0 pp · low precision	2.5%	0.7%
Other Indo-European	1 ±3 · low precision	0.0% ±0.0 pp · low precision	2.6%	2.0%
Korean	202 ±187 · low precision	0.8% ±0.7 pp · low precision	0.3%	0.3%
Chinese, including Mandarin and Cantonese	0 ±24 · low precision	0.0% ±0.1 pp · low precision	0.9%	1.1%
Vietnamese	41 ±60 · low precision	0.2% ±0.2 pp · low precision	0.2%	0.5%
Tagalog, including Filipino	93 ±105 · low precision	0.4% ±0.4 pp · low precision	0.7%	0.6%
Other Asian and Pacific Island	46 ±54 · low precision	0.2% ±0.2 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	51 ±78 · low precision	0.2% ±0.3 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: 19,085
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Less than high school graduate	2,179 ±459	11.4% ±2.4 pp	9.5%	10.4%
High school graduate or equivalency	6,863 ±696	36.0% ±3.4 pp	25.1%	26.0%
Some college, no degree	4,932 ±543	25.8% ±2.7 pp	19.2%	19.1%
Associate’s degree	2,137 ±405	11.2% ±2.1 pp	8.3%	8.8%
Bachelor’s degree	2,150 ±372	11.3% ±1.9 pp	22.6%	21.6%
Graduate or professional degree	824 ±244	4.3% ±1.3 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: 26,215
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Same house	23,161 ±1,035	88.4% ±3.6 pp	88.9%	87.7%
Moved within same county	2,000 ±733	7.6% ±2.8 pp	6.4%	6.3%
Moved from a different county in the same state	365 ±237 · low precision	1.4% ±0.9 pp · low precision	2.4%	3.1%
Moved from a different state	669 ±334	2.6% ±1.3 pp	1.6%	2.3%
Moved from abroad	20 ±24 · low precision	0.1% ±0.1 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

6.7% of Granite City residents (±1.4 percentage points) had no health insurance coverage when surveyed, compared with 6.9% in Illinois and 8.4% nationally. 85.3% 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	Granite City	Illinois	U.S.	Compared with Illinois
People without health insurance Civilian noninstitutionalized population	6.7% ±1.4 pp	6.9%	8.4%	Not statistically different
Households with a broadband subscription Households	85.3% ±5.0 pp	90.8%	91.0%	Lower
Veterans Civilian population age 18 and older	9.2% ±1.6 pp	4.8%	6.2%	Higher

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 Granite City . 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 Granite City housing and cost context or return to the city profile.