Greenville, Illinois demographics

Greenville, IL demographics: median age 35.8; 23.7% of adults 25+ hold a bachelor’s degree. Age, race, households, languages and education, ACS 2020–2024 with margins of error.

ACS 2020–2024 · Greenville city, Illinois · Incorporated city · GEOID 1731589. The survey estimates a population of 7,235 for its five-year window. This is separate from the annual July 2025 population estimate on the city overview.

Median age in Greenville is 35.8 years, with a 90% margin of error of 1.7 years. There are 2,284 households (±180). 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	35.8 ±1.7	39.0 ±0.1	38.9 ±0.1

Age groups · B01001 · ACS 2020–2024 Total population: 7,235
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Under 18	1,070 ±217	14.8% ±3.0 pp	21.8%	22.0%
18–34	2,481 ±312	34.3% ±4.2 pp	22.7%	22.8%
35–64	2,634 ±333	36.4% ±4.5 pp	38.5%	38.0%
65 and older	1,050 ±194	14.5% ±2.6 pp	17.0%	17.2%

Sex categories as published by ACS · B01001 · ACS 2020–2024 Total population: 7,235
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Male	4,171 ±237	57.7% ±2.7 pp	49.4%	49.5%
Female	3,064 ±289	42.3% ±3.8 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: 7,235
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
White alone	5,933 ±252	82.0% ±2.3 pp	61.0%	61.0%
Black or African American alone	892 ±136	12.3% ±1.8 pp	13.6%	12.2%
American Indian and Alaska Native alone	51 ±33 · low precision	0.7% ±0.5 pp · low precision	0.6%	0.9%
Asian alone	81 ±57 · low precision	1.1% ±0.8 pp · low precision	6.0%	6.0%
Native Hawaiian and Other Pacific Islander alone	0 ±18 · low precision	0.0% ±0.2 pp · low precision	0.0%	0.2%
Some other race alone	9 ±18 · low precision	0.1% ±0.2 pp · low precision	7.9%	7.1%
Two or more races	269 ±156 · low precision	3.7% ±2.2 pp · low precision	10.9%	12.6%

Hispanic or Latino origin · B03003 · ACS 2020–2024 Total population: 7,235
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Not Hispanic or Latino	7,034 ±254	97.2% ±1.7 pp	81.2%	80.7%
Hispanic or Latino	201 ±106 · low precision	2.8% ±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: 2,284
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Married-couple family	908 ±156	39.8% ±6.1 pp	45.3%	46.9%
Other family: male householder, no spouse present	51 ±42 · low precision	2.2% ±1.8 pp · low precision	4.9%	5.1%
Other family: female householder, no spouse present	241 ±126 · low precision	10.6% ±5.5 pp · low precision	11.9%	12.2%
Nonfamily: householder living alone	960 ±208	42.0% ±8.5 pp	31.2%	28.7%
Nonfamily: householder not living alone	124 ±89 · low precision	5.4% ±3.9 pp · low precision	6.7%	7.0%

Households with children · B11005 · ACS 2020–2024 Households: 2,284
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Households with people under 18	743 ±143	32.5% ±5.7 pp	28.6%	29.5%
Households without people under 18	1,541 ±243	67.5% ±9.2 pp	71.4%	70.5%

Household size · B11016 · ACS 2020–2024 Households: 2,284
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
One-person nonfamily households	960 ±208	42.0% ±8.5 pp	31.2%	28.7%
Two-person households	619 ±195	27.1% ±8.3 pp	32.3%	33.8%
Three-person households	298 ±142	13.0% ±6.1 pp	14.7%	15.3%
Four-person households	172 ±107 · low precision	7.5% ±4.6 pp · low precision	12.6%	12.6%
Five-person households	235 ±108	10.3% ±4.6 pp	5.8%	5.9%
Six-person households	0 ±25 · low precision	0.0% ±1.1 pp · low precision	2.1%	2.2%
Seven or more people	0 ±25 · low precision	0.0% ±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: 7,235
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Native	7,102 ±231	98.2% ±0.8 pp	85.3%	85.9%
Foreign born	133 ±72 · low precision	1.8% ±1.0 pp · low precision	14.7%	14.1%

Language spoken at home · C16001 · ACS 2020–2024 Population age 5 and older: 6,921
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
English only	6,698 ±250	96.8% ±1.3 pp	76.0%	77.7%
Spanish	114 ±57	1.6% ±0.8 pp	14.0%	13.6%
French, Haitian, or Cajun	0 ±18 · low precision	0.0% ±0.3 pp · low precision	0.3%	0.7%
German or other West Germanic	0 ±18 · low precision	0.0% ±0.3 pp · low precision	0.3%	0.5%
Russian, Polish, or other Slavic	0 ±18 · low precision	0.0% ±0.3 pp · low precision	2.5%	0.7%
Other Indo-European	27 ±39 · low precision	0.4% ±0.6 pp · low precision	2.6%	2.0%
Korean	0 ±18 · low precision	0.0% ±0.3 pp · low precision	0.3%	0.3%
Chinese, including Mandarin and Cantonese	4 ±7 · low precision	0.1% ±0.1 pp · low precision	0.9%	1.1%
Vietnamese	0 ±18 · low precision	0.0% ±0.3 pp · low precision	0.2%	0.5%
Tagalog, including Filipino	38 ±58 · low precision	0.5% ±0.8 pp · low precision	0.7%	0.6%
Other Asian and Pacific Island	30 ±47 · low precision	0.4% ±0.7 pp · low precision	1.0%	1.1%
Arabic	0 ±18 · low precision	0.0% ±0.3 pp · low precision	0.6%	0.5%
Other and unspecified	10 ±18 · low precision	0.1% ±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: 4,864
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Less than high school graduate	646 ±164	13.3% ±3.3 pp	9.5%	10.4%
High school graduate or equivalency	1,398 ±271	28.7% ±5.4 pp	25.1%	26.0%
Some college, no degree	1,455 ±286	29.9% ±5.7 pp	19.2%	19.1%
Associate’s degree	213 ±107 · low precision	4.4% ±2.2 pp · low precision	8.3%	8.8%
Bachelor’s degree	671 ±220	13.8% ±4.5 pp	22.6%	21.6%
Graduate or professional degree	481 ±182	9.9% ±3.7 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: 7,216
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Same house	5,116 ±454	70.9% ±5.9 pp	88.9%	87.7%
Moved within same county	775 ±353	10.7% ±4.9 pp	6.4%	6.3%
Moved from a different county in the same state	994 ±348	13.8% ±4.8 pp	2.4%	3.1%
Moved from a different state	274 ±94	3.8% ±1.3 pp	1.6%	2.3%
Moved from abroad	57 ±53 · low precision	0.8% ±0.7 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

1.7% of Greenville residents (±1.4 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	Greenville	Illinois	U.S.	Compared with Illinois
People without health insurance Civilian noninstitutionalized population	1.7% ±1.4 pp · low precision	6.9%	8.4%	Lower
Households with a broadband subscription Households	87.5% ±5.4 pp	90.8%	91.0%	Not statistically different
Veterans Civilian population age 18 and older	4.4% ±2.1 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 Greenville . 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 Greenville housing and cost context or return to the city profile.