South Elgin, Illinois demographics

South Elgin, IL demographics: median age 39.0; 37.7% of adults 25+ hold a bachelor’s degree. Age, race, households, languages and education, ACS 2020–2024 with margins of error.

ACS 2020–2024 · South Elgin village, Illinois · Incorporated village · GEOID 1770720. The survey estimates a population of 24,217 for its five-year window. This is separate from the annual July 2025 population estimate on the city overview.

Median age in South Elgin is 39.0 years, with a 90% margin of error of 1.5 years. There are 8,760 households (±395). 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	39.0 ±1.5	39.0 ±0.1	38.9 ±0.1

Age groups · B01001 · ACS 2020–2024 Total population: 24,217
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Under 18	5,531 ±640	22.8% ±2.6 pp	21.8%	22.0%
18–34	4,976 ±620	20.5% ±2.6 pp	22.7%	22.8%
35–64	10,731 ±817	44.3% ±3.4 pp	38.5%	38.0%
65 and older	2,979 ±498	12.3% ±2.1 pp	17.0%	17.2%

Sex categories as published by ACS · B01001 · ACS 2020–2024 Total population: 24,217
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Male	12,753 ±552	52.7% ±2.3 pp	49.4%	49.5%
Female	11,464 ±559	47.3% ±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: 24,217
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
White alone	14,790 ±1,076	61.1% ±4.4 pp	61.0%	61.0%
Black or African American alone	1,150 ±410	4.7% ±1.7 pp	13.6%	12.2%
American Indian and Alaska Native alone	148 ±143 · low precision	0.6% ±0.6 pp · low precision	0.6%	0.9%
Asian alone	2,639 ±692	10.9% ±2.9 pp	6.0%	6.0%
Native Hawaiian and Other Pacific Islander alone	135 ±170 · low precision	0.6% ±0.7 pp · low precision	0.0%	0.2%
Some other race alone	2,221 ±602	9.2% ±2.5 pp	7.9%	7.1%
Two or more races	3,134 ±725	12.9% ±3.0 pp	10.9%	12.6%

Hispanic or Latino origin · B03003 · ACS 2020–2024 Total population: 24,217
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Not Hispanic or Latino	19,294 ±934	79.7% ±3.9 pp	81.2%	80.7%
Hispanic or Latino	4,923 ±928	20.3% ±3.8 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: 8,760
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Married-couple family	5,423 ±351	61.9% ±2.9 pp	45.3%	46.9%
Other family: male householder, no spouse present	322 ±130	3.7% ±1.5 pp	4.9%	5.1%
Other family: female householder, no spouse present	615 ±264	7.0% ±3.0 pp	11.9%	12.2%
Nonfamily: householder living alone	1,935 ±352	22.1% ±3.9 pp	31.2%	28.7%
Nonfamily: householder not living alone	465 ±167	5.3% ±1.9 pp	6.7%	7.0%

Households with children · B11005 · ACS 2020–2024 Households: 8,760
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Households with people under 18	3,135 ±305	35.8% ±3.1 pp	28.6%	29.5%
Households without people under 18	5,625 ±560	64.2% ±5.7 pp	71.4%	70.5%

Household size · B11016 · ACS 2020–2024 Households: 8,760
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
One-person nonfamily households	1,935 ±352	22.1% ±3.9 pp	31.2%	28.7%
Two-person households	2,543 ±428	29.0% ±4.7 pp	32.3%	33.8%
Three-person households	1,680 ±329	19.2% ±3.7 pp	14.7%	15.3%
Four-person households	1,531 ±272	17.5% ±3.0 pp	12.6%	12.6%
Five-person households	768 ±263	8.8% ±3.0 pp	5.8%	5.9%
Six-person households	173 ±110 · low precision	2.0% ±1.2 pp · low precision	2.1%	2.2%
Seven or more people	130 ±94 · low precision	1.5% ±1.1 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: 24,217
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Native	20,174 ±679	83.3% ±2.8 pp	85.3%	85.9%
Foreign born	4,043 ±674	16.7% ±2.8 pp	14.7%	14.1%

Language spoken at home · C16001 · ACS 2020–2024 Population age 5 and older: 23,157
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
English only	17,304 ±899	74.7% ±3.8 pp	76.0%	77.7%
Spanish	3,123 ±747	13.5% ±3.2 pp	14.0%	13.6%
French, Haitian, or Cajun	0 ±24 · low precision	0.0% ±0.1 pp · low precision	0.3%	0.7%
German or other West Germanic	121 ±159 · low precision	0.5% ±0.7 pp · low precision	0.3%	0.5%
Russian, Polish, or other Slavic	251 ±147 · low precision	1.1% ±0.6 pp · low precision	2.5%	0.7%
Other Indo-European	1,294 ±513	5.6% ±2.2 pp	2.6%	2.0%
Korean	41 ±60 · low precision	0.2% ±0.3 pp · low precision	0.3%	0.3%
Chinese, including Mandarin and Cantonese	197 ±179 · low precision	0.9% ±0.8 pp · low precision	0.9%	1.1%
Vietnamese	40 ±54 · low precision	0.2% ±0.2 pp · low precision	0.2%	0.5%
Tagalog, including Filipino	270 ±182 · low precision	1.2% ±0.8 pp · low precision	0.7%	0.6%
Other Asian and Pacific Island	434 ±340 · low precision	1.9% ±1.5 pp · low precision	1.0%	1.1%
Arabic	46 ±52 · low precision	0.2% ±0.2 pp · low precision	0.6%	0.5%
Other and unspecified	36 ±59 · 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: 16,790
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Less than high school graduate	1,392 ±349	8.3% ±2.1 pp	9.5%	10.4%
High school graduate or equivalency	4,514 ±606	26.9% ±3.5 pp	25.1%	26.0%
Some college, no degree	2,887 ±485	17.2% ±2.8 pp	19.2%	19.1%
Associate’s degree	1,659 ±375	9.9% ±2.2 pp	8.3%	8.8%
Bachelor’s degree	3,992 ±470	23.8% ±2.7 pp	22.6%	21.6%
Graduate or professional degree	2,346 ±481	14.0% ±2.8 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: 24,148
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Same house	21,862 ±595	90.5% ±2.4 pp	88.9%	87.7%
Moved within same county	652 ±270	2.7% ±1.1 pp	6.4%	6.3%
Moved from a different county in the same state	1,502 ±497	6.2% ±2.1 pp	2.4%	3.1%
Moved from a different state	97 ±67 · low precision	0.4% ±0.3 pp · low precision	1.6%	2.3%
Moved from abroad	35 ±45 · low precision	0.1% ±0.2 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

7.0% of South Elgin residents (±1.8 percentage points) had no health insurance coverage when surveyed, compared with 6.9% in Illinois and 8.4% nationally. 95.8% 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	South Elgin	Illinois	U.S.	Compared with Illinois
People without health insurance Civilian noninstitutionalized population	7.0% ±1.8 pp	6.9%	8.4%	Not statistically different
Households with a broadband subscription Households	95.8% ±0.6 pp	90.8%	91.0%	Higher
Veterans Civilian population age 18 and older	3.7% ±1.0 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 South Elgin . 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 South Elgin housing and cost context or return to the city profile.