Pekin, Illinois demographics

Pekin, IL demographics: median age 41.9; 17.9% of adults 25+ hold a bachelor’s degree. Age, race, households, languages and education, ACS 2020–2024 with margins of error.

ACS 2020–2024 · Pekin city, Illinois · Incorporated city · GEOID 1758447. The survey estimates a population of 31,781 for its five-year window. This is separate from the annual July 2025 population estimate on the city overview.

Median age in Pekin is 41.9 years, with a 90% margin of error of 1.2 years. There are 13,503 households (±457). 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	41.9 ±1.2	39.0 ±0.1	38.9 ±0.1

Age groups · B01001 · ACS 2020–2024 Total population: 31,781
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Under 18	6,176 ±594	19.4% ±1.9 pp	21.8%	22.0%
18–34	7,077 ±600	22.3% ±1.9 pp	22.7%	22.8%
35–64	12,370 ±796	38.9% ±2.5 pp	38.5%	38.0%
65 and older	6,158 ±565	19.4% ±1.8 pp	17.0%	17.2%

Sex categories as published by ACS · B01001 · ACS 2020–2024 Total population: 31,781
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Male	16,537 ±507	52.0% ±1.4 pp	49.4%	49.5%
Female	15,244 ±514	48.0% ±1.5 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: 31,781
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
White alone	28,833 ±693	90.7% ±1.8 pp	61.0%	61.0%
Black or African American alone	1,115 ±363	3.5% ±1.1 pp	13.6%	12.2%
American Indian and Alaska Native alone	125 ±42	0.4% ±0.1 pp	0.6%	0.9%
Asian alone	212 ±133 · low precision	0.7% ±0.4 pp · low precision	6.0%	6.0%
Native Hawaiian and Other Pacific Islander alone	21 ±35 · low precision	0.1% ±0.1 pp · low precision	0.0%	0.2%
Some other race alone	74 ±60 · low precision	0.2% ±0.2 pp · low precision	7.9%	7.1%
Two or more races	1,401 ±325	4.4% ±1.0 pp	10.9%	12.6%

Hispanic or Latino origin · B03003 · ACS 2020–2024 Total population: 31,781
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Not Hispanic or Latino	30,798 ±475	96.9% ±0.8 pp	81.2%	80.7%
Hispanic or Latino	983 ±240	3.1% ±0.8 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: 13,503
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Married-couple family	4,687 ±368	34.7% ±2.5 pp	45.3%	46.9%
Other family: male householder, no spouse present	987 ±247	7.3% ±1.8 pp	4.9%	5.1%
Other family: female householder, no spouse present	1,332 ±242	9.9% ±1.8 pp	11.9%	12.2%
Nonfamily: householder living alone	5,332 ±508	39.5% ±3.5 pp	31.2%	28.7%
Nonfamily: householder not living alone	1,165 ±330	8.6% ±2.4 pp	6.7%	7.0%

Households with children · B11005 · ACS 2020–2024 Households: 13,503
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Households with people under 18	3,226 ±245	23.9% ±1.6 pp	28.6%	29.5%
Households without people under 18	10,277 ±537	76.1% ±3.0 pp	71.4%	70.5%

Household size · B11016 · ACS 2020–2024 Households: 13,503
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
One-person nonfamily households	5,332 ±508	39.5% ±3.5 pp	31.2%	28.7%
Two-person households	4,315 ±446	32.0% ±3.1 pp	32.3%	33.8%
Three-person households	1,858 ±353	13.8% ±2.6 pp	14.7%	15.3%
Four-person households	1,011 ±233	7.5% ±1.7 pp	12.6%	12.6%
Five-person households	632 ±181	4.7% ±1.3 pp	5.8%	5.9%
Six-person households	243 ±126 · low precision	1.8% ±0.9 pp · low precision	2.1%	2.2%
Seven or more people	112 ±77 · low precision	0.8% ±0.6 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: 31,781
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Native	31,275 ±477	98.4% ±0.8 pp	85.3%	85.9%
Foreign born	506 ±247	1.6% ±0.8 pp	14.7%	14.1%

Language spoken at home · C16001 · ACS 2020–2024 Population age 5 and older: 30,134
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
English only	29,226 ±526	97.0% ±0.8 pp	76.0%	77.7%
Spanish	497 ±171	1.6% ±0.6 pp	14.0%	13.6%
French, Haitian, or Cajun	0 ±27 · low precision	0.0% ±0.1 pp · low precision	0.3%	0.7%
German or other West Germanic	64 ±61 · low precision	0.2% ±0.2 pp · low precision	0.3%	0.5%
Russian, Polish, or other Slavic	20 ±32 · low precision	0.1% ±0.1 pp · low precision	2.5%	0.7%
Other Indo-European	145 ±169 · low precision	0.5% ±0.6 pp · low precision	2.6%	2.0%
Korean	0 ±27 · low precision	0.0% ±0.1 pp · low precision	0.3%	0.3%
Chinese, including Mandarin and Cantonese	3 ±7 · low precision	0.0% ±0.0 pp · low precision	0.9%	1.1%
Vietnamese	0 ±27 · low precision	0.0% ±0.1 pp · low precision	0.2%	0.5%
Tagalog, including Filipino	101 ±117 · low precision	0.3% ±0.4 pp · low precision	0.7%	0.6%
Other Asian and Pacific Island	36 ±64 · low precision	0.1% ±0.2 pp · low precision	1.0%	1.1%
Arabic	0 ±27 · low precision	0.0% ±0.1 pp · low precision	0.6%	0.5%
Other and unspecified	42 ±38 · low precision	0.1% ±0.1 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: 22,815
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Less than high school graduate	2,049 ±406	9.0% ±1.8 pp	9.5%	10.4%
High school graduate or equivalency	8,682 ±766	38.1% ±3.2 pp	25.1%	26.0%
Some college, no degree	5,421 ±557	23.8% ±2.4 pp	19.2%	19.1%
Associate’s degree	2,572 ±353	11.3% ±1.5 pp	8.3%	8.8%
Bachelor’s degree	2,780 ±380	12.2% ±1.6 pp	22.6%	21.6%
Graduate or professional degree	1,311 ±308	5.7% ±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: 31,278
Category	Count ± MOE	Share ± MOE (pp)	Illinois	U.S.
Same house	27,006 ±754	86.3% ±2.0 pp	88.9%	87.7%
Moved within same county	2,182 ±493	7.0% ±1.6 pp	6.4%	6.3%
Moved from a different county in the same state	1,049 ±276	3.4% ±0.9 pp	2.4%	3.1%
Moved from a different state	963 ±337	3.1% ±1.1 pp	1.6%	2.3%
Moved from abroad	78 ±68 · low precision	0.2% ±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

5.8% of Pekin residents (±1.3 percentage points) had no health insurance coverage when surveyed, compared with 6.9% in Illinois and 8.4% nationally. 86.9% 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	Pekin	Illinois	U.S.	Compared with Illinois
People without health insurance Civilian noninstitutionalized population	5.8% ±1.3 pp	6.9%	8.4%	Not statistically different
Households with a broadband subscription Households	86.9% ±1.6 pp	90.8%	91.0%	Lower
Veterans Civilian population age 18 and older	7.9% ±1.5 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 Pekin . 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 Pekin housing and cost context or return to the city profile.