County Kendall County, Illinois - Population, Income & Demographics

The median income of households in Kendall County, Illinois was $110,474. An estimated 2.3% of households had income below $10,000 a year and 16.1% had income of $200,000 or more.

An estimated 87.2% of households received earnings. An estimated 24.2% of households received Social Security and an estimated 22.3 % of households received retirement income other than Social Security. The average income from Social Security was $25,845. These income sources are not mutually exclusive; that is, some households received income from more than one source.

In 2019-2023, 4.9 % of people were in poverty. An estimated 6.9% of children under 18 were below the poverty level, compared with 3.9% of people 65 years old and over. An estimated 4.1% of people 18 to 64 years were below the poverty level.

In 2019-2023, 8.1 % of households received SNAP (the Supplemental Nutrition Assistance Program). An estimated 69.4% of households that received SNAP had children under 18, and 30.2% of households that received SNAP had one or more people 60 years and over. An estimated 34.5% of all households receiving SNAP were families with a female householder and no spouse present.

Among the civilian noninstitutionalized population in Kendall County, Illinois in 2019-2023, 95.6% had health insurance coverage and 4.4% did not have health insurance coverage. Private coverage was 82.3% and public coverage was 22.6%, respectively. The percentage of children under the age of 19 with no health insurance coverage was 3%.

In 2019-2023, Kendall County, Illinois had a total population of 135,053 - 67,654 (50.1%) females and 67,399 (49.9%) males. The median age was 36 years. An estimated 27.5% of the population was under 18 years, 34.2% was 19 to 44 years, 24.5% was 45 to 64 years, and 11 % was 65 years and older.

In 2019-2023, there were 44,526 households in Kendall County, Illinois. The average household size was 3.03 people.

Married-couple households made up 60.8% of the households in Kendall County, Illinois while cohabiting couple households made up 7.7% of households. Female householders with no spouse or partner present were 19.5% of all households, while 12.1% of households had male householders with no spouse or partner present. Some households had one person, as 7.6% of households were male householders living alone, and 9.3% were female householders living alone, for a total of 16.9% of all households.

In Kendall County, Illinois, 43.8% of all households had one or more people under the age of 18; 24.1% of all households had one or more people 65 years and over.

In 2019-2023, an estimated 89.5% of the people living in Kendall County, Illinois were U.S. natives. 73.9% of the Kendall County, Illinois population were living in the state where they were born.

Approximately 10.5% of Kendall County, Illinois residents in 2019-2023 were foreign-born. 51.6% of foreign-born were naturalized U.S. citizens and an estimated 78.7 % entered the country before the year 2010.

Foreign-born residents of Kendall County, Illinois come from different parts of the world. The bar graph below displays the percentage of foreign-born from each world region of birth in 2019-2023 for Kendall County, Illinois.

Among people at least five years old living in Kendall County, Illinois in 2019-2023, 21 % spoke a language other than English at home. Spanish was spoken by 15% of people at least five years old; 5.7% reported that they did not speak English "very well."

In 2019-2023, 90.9 % of the people at least one year old living in Kendall County, Illinois were living in the same house one year earlier.

In 2019-2023, 93.6 % of people 25 years and over had at least graduated from high school and 36.4% had a bachelor's degree or higher. An estimated 6.4% did not complete high school.

The total school enrollment in Kendall County, Illinois was 38,030 in 2019-2023. Nursery school enrollment was 2,411 and kindergarten through 12th grade enrollment was 28,061. College or graduate school enrollment was 7,558.

In Kendall County, Illinois, among the civilian noninstitutionalized population in 2019-2023, 7.7 % reported a disability. The likelihood of having a disability varied by age - from 3.1% of people under 18 years old, to 6.1% of people 18 to 64 years old, and to 27.6% of those 65 and over.

In Kendall County, Illinois, 70 % of the population 16 and over were employed; 27.2% were not currently in the labor force.

An estimated 81.6% of the people employed were private wage and salary workers; 13.9% were federal, state, or local government workers; and 4.4 % were self-employed in their own (not incorporated) business.

In 2019-2023, the civilian employed population 16 years and older in Kendall County, Illinois worked in the following industries:

An estimated 77.4% of Kendall County, Illinois workers drove to work alone in 2019-2023, and 6.8% carpooled. Among those who commuted to work, it took them on average 32.9 minutes to get to work.

In 2019-2023, Kendall County, Illinois had a total of 45,775 housing units. Of these housing units, 91.6% were single-family houses either not attached to any other structure or attached to one or more structures (commonly referred to as "townhouses" or "row houses"). 8.1% of the housing units were located in multi-unit structures, or those buildings that contained two or more apartments. 0.2% were mobile homes, while any remaining housing units were classified as "other," which included boats, recreational vehicles, vans, etc.

11.1% of the housing inventory was comprised of houses built since 2010, while 4.5% of the houses were first built in 1939 or earlier. The median number of rooms in all housing units in Kendall County, Illinois was 6.8 rooms, and of these housing units 79.5% had three or more bedrooms.

In 2019-2023, Kendall County, Illinois had 44,526 housing units that were occupied or had people living in them, while the remaining 1,249 were vacant. Of the occupied housing units, the percentage of these houses occupied by owners (also known as the homeownership rate) was 84.2% while renters occupied 15.8%. The average household size of owner-occupied houses was 3.1 and in renter-occupied houses it was 2.64.

10% of householders of these occupied houses had moved into their house since 2021, while 6% moved into their house in 1989 or earlier. Households without a vehicle available for personal use comprised 2.1% and another 32.4% had three or more vehicles available for use.

The following chart provides the primary fuel used to heat houses in Kendall County, Illinois:

In 2019-2023, the median property value for owner-occupied houses in Kendall County, Illinois was $298,900.

Of the owner-occupied households, 77.6 % had a mortgage. 22.4% owned their houses "free and clear," that is without a primary mortgage or loan on the house. The median monthly housing costs for owners with a mortgage was $2,229 and for owners without a mortgage it was $974.

For renter-occupied houses, the median gross rent for Kendall County, Illinois was $1,763. Gross rent includes the monthly contract rent and any monthly payments made for electricity, gas, water and sewer, and any other fuels to heat the house.