How many people live in Kane County, IL?
Updated Apr. 6, 2026Refreshed annually
In 2024, there were about 521,000 people living in Kane County, IL. That makes Kane County the fifth-most populous county in Illinois. It is home to 4.1% of people living in the state.
521K
population of Kane County, IL (2024)
4.1%
County share of the Illinois population (2024)
About 521,000 people lived in Kane County, IL in 2024.
Population estimates, 2000–2024
What are Kane County, IL’s age demographics?
About 86,500 Kane County residents are aged 65 and older in 2024. That represents 16.6% of its population. For comparison, the age group represents 17.9% of Illinois' population and 18% in the US overall.
Another 119,200 Kane County residents, or 22.9% of the population, were children under 18. For comparison, the age group represents 21.2% of Illinois’s population and 21.6% in the US overall.
A higher share of Kane County, IL's population is aged 45–64 than the US as a whole.
Population estimates by age group, (2024)
What are Kane County, IL’s racial and ethnic demographics?
Hispanic residents make up 34% of the Kane County, IL population, higher than the national share of 20%.
In contrast, Kane County’s non-Hispanic Black or African American population accounts for 5.3%, below the 12.6% nationwide, and the non-Hispanic white population makes up 54.1% of the county, compared with 57.5% nationally.
Racial and ethnic make up differ based on location. These figures reflect how people identified their race alone (not in combination with other races), and separate out Hispanic or Latino ethnicity, following Census reporting standards.
Kane County, IL has a higher share of a Hispanic population than Illinois as a whole.
Population estimates by race and ethnicity, (2024)
The largest city or town in Kane County, IL is Aurora with about 102,500 residents in 2024.
Cities and towns in Kane County, IL ranked by population
Population (2024), includes only portions within county
| City or town | Population | |
|---|---|---|
| 1. | Aurora (pt.) | 102,523 |
| 2. | Elgin (pt.) | 84,122 |
| 3. | Carpentersville (pt.) | 36,959 |
| 4. | St. Charles (pt.) | 32,873 |
| 5. | Batavia (pt.) | 23,227 |
| 6. | Geneva (pt.) | 21,168 |
| 7. | South Elgin (pt.) | 17,169 |
| 8. | Pingree Grove (pt.) | 11,444 |
| 9. | Campton Hills (pt.) | 10,347 |
| 10. | Sugar Grove (pt.) | 9,339 |
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Methodology
USAFacts standardizes data, in areas such as time and demographics, to make it easier to understand and compare.
The analysis was generated with the help of AI and reviewed by USAFacts for accuracy.
Page sources
USAFacts endeavors to share the most up-to-date information available. We sourced the data on this page directly from government agencies; however, the intervals at which agencies publish updated data vary.
