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Kendall County, Illinois
Key Indicators
A quick look at key numbers
Population
137,675
Source: U.S. Census Bureau American Community Survey (ACS) 2020-2024 5-Year Estimates
Median Age
36.3
years ∙ half population younger than 36.3, half older
Diversity Index
55.7%
chance two random people differ in race and ethnicity
Nativity
11.4%
foreign-born population
Geographic Context
Location, size, and surroundings
Demographics & Living
Who lives here, how households are formed, and community composition
Population Composition
Key characteristics of the population
Sex Distribution
50%
male
Male
50%
Female
50%
males per 100 females
Kendall County
100
Illinois
97.7
United States
98
Nativity
11.4%
foreign-born population
% Foreign-born
Kendall County
11.4%
Illinois
14.7%
United States
14.1%
Age Distribution
How the population is spread across age groups
Median Age
36.3
years ∙ half population younger than 36.3, half older
Dependency ratio
62
dependents per 100 working-age adults
Kendall County
62
Illinois
63.5
United States
64.4
AGE DISTRIBUTION
Distribution of age group
Median age
| Kendall County | Illinois | United States | |
|---|---|---|---|
| Age Group | |||
| Children (Under 18) | 27% | 21.8% | 22% |
| Working age (18-64) | 61.8% | 61.2% | 60.8% |
| Senior (65+) | 11.2% | 17% | 17.2% |
| Dependency ratio | |||
| Total dependency ratio | 62 | 63.5 | 64.4 |
| Child dependency ratio | 43.8 | 35.7 | 36.1 |
| Old-age dependency ratio | 18.2 | 27.8 | 28.3 |
Racial & Ethnic Composition
Racial and ethnic makeup and how it compares
Race & Ethnicity
Note: White, Black, and Asian refer to individuals belonging to a single race and not of Hispanic origin. Hispanics may be of any race.
Diversity Index
55.7%
chance two random people differ in race and ethnicity
Kendall County
55.7%
Illinois
60.5%
United States
61.4%
Note: The Diversity Index (DI), based on the Blau Index, measures the probability that two randomly selected individuals differ in race and ethnicity. Values range from 0 (no diversity) to 1 (high diversity) and are shown as percentages.
RACIAL & ETHNIC COMPOSITION
Race & Ethnicity
Percentage of Kendall County population
| Kendall County | Illinois | United States | |
|---|---|---|---|
| Hispanic or Latino | 22.4% | 18.8% | 19.3% |
| Mexican | 18.7% | 14.4% | 11.3% |
| Puerto Rican | 1.4% | 1.6% | 1.8% |
| Cuban | 0.2% | 0.3% | 0.8% |
| Other Hispanic / Latino | 2.1% | 2.5% | 5.5% |
| Not Hispanic or Latino | 77.6% | 81.2% | 80.7% |
| One race | 73.7% | 77.8% | 76.4% |
| White | 62% | 58.1% | 57.4% |
| Black or African American | 7.6% | 13.3% | 11.9% |
| American Indian and Alaska Native | 0.2% | 0.1% | 0.5% |
| Asian | 3.5% | 5.9% | 5.9% |
| Native Hawaiian and Other Pacific Islander | 0% | 0% | 0.2% |
| Some Other Race | 0.4% | 0.4% | 0.6% |
| Two or more races (Multiracial) | 3.9% | 3.4% | 4.3% |
Household & Families Composition
Household size, type, and family structure
Household structure
77.2%
family
Family
77.2%
Non family
22.8%
% family households
Kendall County
77.2%
Illinois
62.2%
United States
64.2%
Average household size
3.03
persons per household
Household & Family COMPOSITION
Households
Percentage of Kendall County population
| Kendall County | Illinois | United States | |
|---|---|---|---|
| Total households | 45,372 | 5,036,449 | 129,227,496 |
| Average houshold size | 3.03 | 2.46 | 2.53 |
| Family households | 35,041 | 3,130,978 | 82,990,528 |
| Average family size | 3.45 | 3.14 | 3.14 |
| Married couple family | 26,934 | 2,282,435 | 60,637,388 |
| Other families | 8,107 | 848,543 | 22,353,140 |
| Male householder | 2,803 | 248,521 | 6,572,819 |
| Female householder | 5,304 | 600,022 | 15,780,321 |
| Non-family households | 10,331 | 1,905,471 | 46,236,968 |
| One-person households | 7,823 | 1,569,881 | 37,140,836 |
| Male householder | 3,431 | 712,191 | 16,871,444 |
| Senior (65+) living alone | 1,046 | 210,051 | 5,225,110 |
| Female householder | 4,392 | 857,690 | 20,269,392 |
| Senior (65+) living alone | 2,434 | 417,870 | 10,089,070 |
| Other living arrangements | 2,508 | 335,590 | 9,096,132 |
Housing Profile
Housing stock, ownership, rentals, and cost burdens
Total housing units
46,589
housing units
Kendall County
46,589
Illinois
5,457,452
United States
143,775,355
Occupancy status
97.4%
occupied
Occupied
97.4%
Vacant
2.6%
vacancy rate
Kendall County
2.6%
Illinois
7.7%
United States
10.1%
Housing Characteristics
How the housing supply is structured and used
Types of Housing unit
90.9%
Single family houses
Median Year Built
2001
Half of houses were built before 2001, and half after.
Note: Median year built reflects occupied units only; distribution includes all units.
Housing Characteristics
Units, rooms & bedrooms
Physical characteristics of housing units
| Kendall County | Illinois | United States | |
|---|---|---|---|
| Rooms per unit | |||
| Median rooms | 6.7 | 5.6 | 5.5 |
| 1–3 rooms | 4.8% | 14.6% | 15.1% |
| 4–6 rooms | 42.6% | 50.9% | 51.6% |
| 7+ rooms | 52.5% | 34.6% | 33.4% |
| Bedrooms | |||
| No bedroom / studio | 0.7% | 3.1% | 2.9% |
| 1 bedroom | 3% | 11.5% | 10.9% |
| 2 bedrooms | 17.9% | 27.7% | 25% |
| 3 bedrooms | 38.8% | 35.8% | 38.7% |
| 4+ bedrooms | 39.7% | 21.7% | 22.4% |
| At a glance | |||
| Median year built | 2001 | 1971 | 1981 |
| Total housing units | 46,589 | 5,457,452 | 143,775,355 |
Occupancy Profile
Who is inside and how they use it
Homeownership
84%
owners
Renter-occupied
16%
Owner-occupied
84%
homeownership rate
Kendall County
84%
Illinois
67.1%
United States
65.2%
Average household size
3.09
Owner-occupied
2.67
Renter-occupied
owner-occupied average size
Kendall County
3.09
Illinois
2.62
United States
2.64
Housing Characteristics
Occupied unit characteristics
Tenure, crowding, and utilities
| Kendall County | Illinois | United States | |
|---|---|---|---|
| Total occupied units | 45,372 | 5,036,449 | 129,227,496 |
| Year moved in | |||
| 2020 or later | 22.3% | 23.3% | 24.8% |
| 2010 to 2019 | 42.2% | 38.1% | 39.6% |
| 2000 to 2009 | 23.1% | 17.3% | 16.4% |
| 1999 or earlier | 12.5% | 21.3% | 19.1% |
| Occupants per room | |||
| 1.00 or fewer | 98.3% | 97.5% | 96.6% |
| 1.01 to 1.50 | 1.2% | 1.6% | 2.2% |
| 1.51 or more | 0.5% | 0.8% | 1.2% |
| Vehicles availability | |||
| No vehicles | 2.2% | 11% | 8.4% |
| 1 vehicle | 22.4% | 35.7% | 33.1% |
| 2 vehicles | 44.4% | 35.1% | 36.6% |
| 3 or more vehicles | 31% | 18.3% | 21.9% |
| House heating fuel used | |||
| Gas | 89.4% | 79.5% | 51.4% |
| Electricity | 9.7% | 18.6% | 41.3% |
| Solar | 0.1% | 0.1% | 0.3% |
| Fuel oil, kerosene etc | 0% | 0.1% | 3.9% |
| All other fuels | 0.5% | 0.8% | 2% |
| No fuel used | 0.3% | 0.8% | 1.2% |
| Selected characteristics | |||
| Lacking complete plumbing | 0.1% | 0.3% | 0.4% |
| Lacking complete kitchen | 0.6% | 0.8% | 0.8% |
| No telephone service available | 0.3% | 0.8% | 0.9% |
Housing Value
What owner-occupied units are worth
Median home value
$322,400
owner-occupied units
Housing Cost Burden
27.9%
of homeowners with a mortgage are cost-burdened
Note: Households spending 30% or more of their income on housing costs are considered cost-burdened.
Financial characteristics
Property value and housing costs
Tenure, crowding, and utilities
| Kendall County | Illinois | United States | |
|---|---|---|---|
| Property value | |||
| Median Value | $322,400 | $263,300 | $332,700 |
| Under $100,000 | 2.9% | 13.7% | 11.4% |
| $100,000 - $200,000 | 7.4% | 21.5% | 15.8% |
| $200,000 - $300,000 | 32.5% | 22.3% | 17.8% |
| $300,000 - $500,000 | 48.8% | 27.7% | 26.9% |
| $500,000 - $1,000,000 | 7.9% | 12.1% | 20.9% |
| $1,000,000 and more | 0.4% | 2.7% | 7.1% |
| Owner-occupied households | |||
| With a mortgage | 76.9% | 60.8% | 60.6% |
| Without a mortgage | 23.1% | 39.2% | 39.4% |
| Median monthly owner costs | |||
| With a mortgage | $2,264 | $1,987 | $1,963 |
| Without a mortgage | $1,001 | $792 | $638 |
| Gross rent | |||
| Median rent | $1,781 | $1,274 | $1,413 |
Education Profile
How educated is the community and how education pays off
Adults with a college degree
36.9%
of adults 25+ with a bachelor's degree or higher
Kendall County
36.9%
Illinois
37.8%
United States
35.7%
Adults without a high school diploma
6%
of adults (25+) without a high school diploma
Kendall County
6%
Illinois
9.6%
United States
10.4%
School Enrollment
Who is enrolled in school and at what level
School enrollment
38,561
population (age 3+) enrolled in school
College-going rate (18-24 yr olds)
37.8%
of 18-24-year-olds in college or graduate school
Enrollment & school type
Enrollment levels, college-going rate, and public vs private school split
Population 3+ currently enrolled in a school
| Kendall County | Illinois | United States | |
|---|---|---|---|
| Total enrolled (age 3+) | 38,561 | 3,051,569 | 80,089,790 |
| Nursery / preschool | 6.6% | 6.3% | 5.7% |
| K–12 | 73.4% | 67.3% | 67.6% |
| Kindergarten | 4.3% | 4.9% | 5% |
| Elementary: Grades 1–4 | 24.4% | 19.5% | 19.8% |
| Elementary: Grades 5–8 | 21.4% | 20.8% | 21% |
| High School: Grades 9–12 | 23.2% | 22.1% | 21.7% |
| College or graduate school | 20% | 26.4% | 26.7% |
| College, undergraduate | 15.1% | 19.8% | 21% |
| Graduate, professional school | 4.9% | 6.6% | 5.8% |
| College-going rate · 18-24 yr olds | 37.8% | 41.4% | 40.9% |
| School type | |||
| Public school | 82.8% | 80.5% | 82% |
| Private school | 17.2% | 19.5% | 18% |
Education Attainment by Level & Gender
What is the highest level of education completed among adults
Education attainment
88,608
population 25 years and over
Attainment by gender
Male vs Female
Adults (25+) · Share within each education level
Educational Attainment Overview
Distribution and key education attainment rates for adults (25+)
Highest credential completed · adults 25+
| Kendall County | Illinois | United States | |
|---|---|---|---|
| Population (25+) | 88,608 | 8,767,004 | 230,807,303 |
| Less than 9th grade | 2.3% | 4.6% | 4.7% |
| 9th–12th, no diploma | 3.7% | 5% | 5.7% |
| High school diploma or GED | 23.2% | 25.1% | 26% |
| Some college, no degree | 23.4% | 19.2% | 19.1% |
| Associate's degree | 10.4% | 8.3% | 8.8% |
| Bachelor's degree or higher | 36.9% | 37.8% | 35.7% |
| Bachelor's degree | 24.3% | 22.6% | 21.6% |
| Graduate or professional | 12.7% | 15.3% | 14.1% |
| High School or higher | 94% | 90.5% | 89.6% |
Earnings by education level
percentage as applicable
Median Earnings
$62,284
Median earnings for adults 25+, by level
Poverty Rate
2.3%
for ages 25+, with bachelors degree or higher
Outcomes by Education Level
Earnings and poverty rates across education levels (25+)
Adults 25+
| Kendall County | Illinois | United States | |
|---|---|---|---|
| Median earnings | |||
| Population 25+, with earnings | $62,284 | $55,582 | $52,696 |
| Less than high school graduate | $42,921 | $34,655 | $32,485 |
| High school graduate (includes equivalency) | $48,542 | $40,965 | $40,153 |
| Some college or associate's degree | $56,798 | $47,813 | $47,260 |
| Bachelor's degree | $74,308 | $73,326 | $70,044 |
| Graduate or professional degree | $81,725 | $91,623 | $90,720 |
| Poverty rates | |||
| Less than high school graduate | 9.1% | 21.6% | 24.2% |
| High school graduate (includes equivalency) | 7.4% | 14.4% | 14.4% |
| Some college or associate's degree | 4.6% | 9.9% | 9.8% |
| Bachelor's degree or higher | 2.3% | 4.5% | 4.5% |
About Neilsberg Research
Neilsberg Research team are data scientists with expertise in processing, analysis and visualization of big data helping small businesses make right decisions.
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