Winchester, Illinois demographics

Winchester, IL demographics: median age 44.6; 18.3% of adults 25+ hold a bachelor’s degree. Age, race, households, languages and education, ACS 2020–2024 with margins of error.

ACS 2020–2024 · Winchester city, Illinois · Incorporated city · GEOID 1782270. The survey estimates a population of 1,498 for its five-year window. This is separate from the annual July 2025 population estimate on the city overview.

Median age in Winchester is 44.6 years, with a 90% margin of error of 6.0 years. There are 676 households (±77). 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	44.6 ±6.0	39.0 ±0.1	38.9 ±0.1

Age groups · B01001 · ACS 2020–2024 Total population: 1,498
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Under 18	352 ±66	23.5% ±3.4 pp	21.8%	22.0%
18–34	270 ±63	18.0% ±3.6 pp	22.7%	22.8%
35–64	528 ±76	35.2% ±2.7 pp	38.5%	38.0%
65 and older	348 ±64	23.2% ±3.2 pp	17.0%	17.2%

Sex categories as published by ACS · B01001 · ACS 2020–2024 Total population: 1,498
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Male	675 ±107	45.1% ±4.6 pp	49.4%	49.5%
Female	823 ±94	54.9% ±9.2 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: 1,498
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
White alone	1,439 ±181	96.1% ±3.1 pp	61.0%	61.0%
Black or African American alone	0 ±13 · low precision	0.0% ±0.9 pp · low precision	13.6%	12.2%
American Indian and Alaska Native alone	0 ±13 · low precision	0.0% ±0.9 pp · low precision	0.6%	0.9%
Asian alone	17 ±11 · low precision	1.1% ±0.7 pp · low precision	6.0%	6.0%
Native Hawaiian and Other Pacific Islander alone	0 ±13 · low precision	0.0% ±0.9 pp · low precision	0.0%	0.2%
Some other race alone	3 ±6 · low precision	0.2% ±0.4 pp · low precision	7.9%	7.1%
Two or more races	39 ±34 · low precision	2.6% ±2.2 pp · low precision	10.9%	12.6%

Hispanic or Latino origin · B03003 · ACS 2020–2024 Total population: 1,498
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Not Hispanic or Latino	1,480 ±184	98.8% ±2.6 pp	81.2%	80.7%
Hispanic or Latino	18 ±23 · low precision	1.2% ±1.5 pp · low precision	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: 676
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Married-couple family	267 ±51	39.5% ±6.1 pp	45.3%	46.9%
Other family: male householder, no spouse present	25 ±11	3.7% ±1.6 pp	4.9%	5.1%
Other family: female householder, no spouse present	96 ±35	14.2% ±4.9 pp	11.9%	12.2%
Nonfamily: householder living alone	246 ±60	36.4% ±7.8 pp	31.2%	28.7%
Nonfamily: householder not living alone	42 ±26 · low precision	6.2% ±3.8 pp · low precision	6.7%	7.0%

Households with children · B11005 · ACS 2020–2024 Households: 676
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Households with people under 18	177 ±45	26.2% ±6.0 pp	28.6%	29.5%
Households without people under 18	499 ±72	73.8% ±6.5 pp	71.4%	70.5%

Household size · B11016 · ACS 2020–2024 Households: 676
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
One-person nonfamily households	246 ±60	36.4% ±7.8 pp	31.2%	28.7%
Two-person households	247 ±49	36.5% ±5.9 pp	32.3%	33.8%
Three-person households	77 ±27	11.4% ±3.8 pp	14.7%	15.3%
Four-person households	69 ±34	10.2% ±4.8 pp	12.6%	12.6%
Five-person households	28 ±25 · low precision	4.1% ±3.6 pp · low precision	5.8%	5.9%
Six-person households	9 ±17 · low precision	1.3% ±2.5 pp · low precision	2.1%	2.2%
Seven or more people	0 ±18 · low precision	0.0% ±2.7 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: 1,498
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Native	1,474 ±183	98.4% ±2.5 pp	85.3%	85.9%
Foreign born	24 ±15 · low precision	1.6% ±1.0 pp · low precision	14.7%	14.1%

Language spoken at home · C16001 · ACS 2020–2024 Population age 5 and older: 1,403
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
English only	1,373 ±165	97.9% ±2.1 pp	76.0%	77.7%
Spanish	13 ±25 · low precision	0.9% ±1.8 pp · low precision	14.0%	13.6%
French, Haitian, or Cajun	0 ±13 · low precision	0.0% ±0.9 pp · low precision	0.3%	0.7%
German or other West Germanic	0 ±13 · low precision	0.0% ±0.9 pp · low precision	0.3%	0.5%
Russian, Polish, or other Slavic	0 ±13 · low precision	0.0% ±0.9 pp · low precision	2.5%	0.7%
Other Indo-European	17 ±11 · low precision	1.2% ±0.8 pp · low precision	2.6%	2.0%
Korean	0 ±13 · low precision	0.0% ±0.9 pp · low precision	0.3%	0.3%
Chinese, including Mandarin and Cantonese	0 ±13 · low precision	0.0% ±0.9 pp · low precision	0.9%	1.1%
Vietnamese	0 ±13 · low precision	0.0% ±0.9 pp · low precision	0.2%	0.5%
Tagalog, including Filipino	0 ±13 · low precision	0.0% ±0.9 pp · low precision	0.7%	0.6%
Other Asian and Pacific Island	0 ±13 · low precision	0.0% ±0.9 pp · low precision	1.0%	1.1%
Arabic	0 ±13 · low precision	0.0% ±0.9 pp · low precision	0.6%	0.5%
Other and unspecified	0 ±13 · low precision	0.0% ±0.9 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: 1,022
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Less than high school graduate	79 ±59 · low precision	7.7% ±5.7 pp · low precision	9.5%	10.4%
High school graduate or equivalency	498 ±78	48.7% ±4.9 pp	25.1%	26.0%
Some college, no degree	151 ±41	14.8% ±3.6 pp	19.2%	19.1%
Associate’s degree	107 ±33	10.5% ±3.0 pp	8.3%	8.8%
Bachelor’s degree	128 ±44	12.5% ±4.0 pp	22.6%	21.6%
Graduate or professional degree	59 ±24	5.8% ±2.2 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: 1,483
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Same house	1,371 ±177	92.4% ±5.0 pp	88.9%	87.7%
Moved within same county	36 ±32 · low precision	2.4% ±2.1 pp · low precision	6.4%	6.3%
Moved from a different county in the same state	58 ±49 · low precision	3.9% ±3.3 pp · low precision	2.4%	3.1%
Moved from a different state	18 ±20 · low precision	1.2% ±1.3 pp · low precision	1.6%	2.3%
Moved from abroad	0 ±13 · low precision	0.0% ±0.9 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

5.3% of Winchester residents (±3.6 percentage points) had no health insurance coverage when surveyed, compared with 6.9% in Illinois and 8.4% nationally. 83.9% 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	Winchester	Illinois	U.S.	Compared with Illinois
People without health insurance Civilian noninstitutionalized population	5.3% ±3.6 pp · low precision	6.9%	8.4%	Not statistically different
Households with a broadband subscription Households	83.9% ±7.0 pp	90.8%	91.0%	Not statistically different
Veterans Civilian population age 18 and older	8.5% ±3.2 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 Winchester . 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 Winchester housing and cost context or return to the city profile.