Geneseo, Illinois demographics

Geneseo, IL demographics: median age 44.7; 32.7% of adults 25+ hold a bachelor’s degree. Age, race, households, languages and education, ACS 2020–2024 with margins of error.

ACS 2020–2024 · Geneseo city, Illinois · Incorporated city · GEOID 1728846. The survey estimates a population of 6,673 for its five-year window. This is separate from the annual July 2025 population estimate on the city overview.

Median age in Geneseo is 44.7 years, with a 90% margin of error of 3.7 years. There are 2,954 households (±181). 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	44.7 ±3.7	39.0 ±0.1	38.9 ±0.1

Age groups · B01001 · ACS 2020–2024 Total population: 6,673
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Under 18	1,456 ±240	21.8% ±3.5 pp	21.8%	22.0%
18–34	1,161 ±217	17.4% ±3.2 pp	22.7%	22.8%
35–64	2,389 ±292	35.8% ±4.1 pp	38.5%	38.0%
65 and older	1,667 ±263	25.0% ±3.8 pp	17.0%	17.2%

Sex categories as published by ACS · B01001 · ACS 2020–2024 Total population: 6,673
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Male	3,073 ±206	46.1% ±2.5 pp	49.4%	49.5%
Female	3,600 ±208	53.9% ±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: 6,673
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
White alone	5,868 ±363	87.9% ±4.2 pp	61.0%	61.0%
Black or African American alone	6 ±11 · low precision	0.1% ±0.2 pp · low precision	13.6%	12.2%
American Indian and Alaska Native alone	0 ±18 · low precision	0.0% ±0.3 pp · low precision	0.6%	0.9%
Asian alone	67 ±57 · low precision	1.0% ±0.9 pp · low precision	6.0%	6.0%
Native Hawaiian and Other Pacific Islander alone	0 ±18 · low precision	0.0% ±0.3 pp · low precision	0.0%	0.2%
Some other race alone	12 ±18 · low precision	0.2% ±0.3 pp · low precision	7.9%	7.1%
Two or more races	720 ±259	10.8% ±3.9 pp	10.9%	12.6%

Hispanic or Latino origin · B03003 · ACS 2020–2024 Total population: 6,673
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Not Hispanic or Latino	6,187 ±343	92.7% ±3.6 pp	81.2%	80.7%
Hispanic or Latino	486 ±236	7.3% ±3.5 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: 2,954
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Married-couple family	1,581 ±155	53.5% ±4.1 pp	45.3%	46.9%
Other family: male householder, no spouse present	96 ±90 · low precision	3.2% ±3.0 pp · low precision	4.9%	5.1%
Other family: female householder, no spouse present	236 ±88	8.0% ±2.9 pp	11.9%	12.2%
Nonfamily: householder living alone	936 ±161	31.7% ±5.1 pp	31.2%	28.7%
Nonfamily: householder not living alone	105 ±67 · low precision	3.6% ±2.3 pp · low precision	6.7%	7.0%

Households with children · B11005 · ACS 2020–2024 Households: 2,954
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Households with people under 18	883 ±163	29.9% ±5.2 pp	28.6%	29.5%
Households without people under 18	2,071 ±214	70.1% ±5.8 pp	71.4%	70.5%

Household size · B11016 · ACS 2020–2024 Households: 2,954
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
One-person nonfamily households	936 ±161	31.7% ±5.1 pp	31.2%	28.7%
Two-person households	1,063 ±183	36.0% ±5.8 pp	32.3%	33.8%
Three-person households	354 ±145	12.0% ±4.9 pp	14.7%	15.3%
Four-person households	397 ±122	13.4% ±4.1 pp	12.6%	12.6%
Five-person households	170 ±67	5.8% ±2.3 pp	5.8%	5.9%
Six-person households	34 ±43 · low precision	1.2% ±1.5 pp · low precision	2.1%	2.2%
Seven or more people	0 ±25 · low precision	0.0% ±0.9 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: 6,673
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Native	6,586 ±276	98.7% ±1.4 pp	85.3%	85.9%
Foreign born	87 ±67 · low precision	1.3% ±1.0 pp · low precision	14.7%	14.1%

Language spoken at home · C16001 · ACS 2020–2024 Population age 5 and older: 6,401
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
English only	6,084 ±308	95.0% ±2.6 pp	76.0%	77.7%
Spanish	235 ±150 · low precision	3.7% ±2.3 pp · low precision	14.0%	13.6%
French, Haitian, or Cajun	6 ±11 · low precision	0.1% ±0.2 pp · low precision	0.3%	0.7%
German or other West Germanic	36 ±34 · low precision	0.6% ±0.5 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	12 ±18 · low precision	0.2% ±0.3 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	0 ±18 · low precision	0.0% ±0.3 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	0 ±18 · low precision	0.0% ±0.3 pp · low precision	0.7%	0.6%
Other Asian and Pacific Island	0 ±18 · low precision	0.0% ±0.3 pp · low precision	1.0%	1.1%
Arabic	9 ±14 · low precision	0.1% ±0.2 pp · low precision	0.6%	0.5%
Other and unspecified	19 ±31 · low precision	0.3% ±0.5 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: 4,854
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Less than high school graduate	268 ±127	5.5% ±2.6 pp	9.5%	10.4%
High school graduate or equivalency	1,394 ±302	28.7% ±6.1 pp	25.1%	26.0%
Some college, no degree	1,142 ±257	23.5% ±5.2 pp	19.2%	19.1%
Associate’s degree	462 ±120	9.5% ±2.4 pp	8.3%	8.8%
Bachelor’s degree	962 ±206	19.8% ±4.1 pp	22.6%	21.6%
Graduate or professional degree	626 ±162	12.9% ±3.3 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: 6,632
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Same house	5,819 ±362	87.7% ±4.1 pp	88.9%	87.7%
Moved within same county	356 ±203 · low precision	5.4% ±3.1 pp · low precision	6.4%	6.3%
Moved from a different county in the same state	181 ±106 · low precision	2.7% ±1.6 pp · low precision	2.4%	3.1%
Moved from a different state	276 ±182 · low precision	4.2% ±2.7 pp · low precision	1.6%	2.3%
Moved from abroad	0 ±18 · low precision	0.0% ±0.3 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

2.5% of Geneseo residents (±1.5 percentage points) had no health insurance coverage when surveyed, compared with 6.9% in Illinois and 8.4% nationally. 84.5% 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	Geneseo	Illinois	U.S.	Compared with Illinois
People without health insurance Civilian noninstitutionalized population	2.5% ±1.5 pp · low precision	6.9%	8.4%	Lower
Households with a broadband subscription Households	84.5% ±3.1 pp	90.8%	91.0%	Lower
Veterans Civilian population age 18 and older	8.8% ±2.6 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 Geneseo . 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 Geneseo housing and cost context or return to the city profile.