DeKalb County, IL
Demographics & Statistics
Updated: 2025-10-25
Updated: 2025-10-25
Life in Dekalb County research summary. HomeSnacks has been researching the quality of life in Dekalb County over the past eight years using Census data, FBI crime data, cost of living data, and other primary sources. Based on the most recently available data, we found the following about life in Dekalb County:
The population in Dekalb County is 100,512.
The median home value in Dekalb County is $286,702.
The median income in Dekalb County is $69,022.
The median rent in Dekalb County is $1,041.
The unemployment rate in Dekalb County is 7.1%.
The poverty rate in Dekalb County is 15.9%.
The average high in Dekalb County is 67.0° and there are 86.4 inches of rainfall annually.
The average high in Dekalb County is 67.0°.
There are 75.15 nice days each year.
Expect an average of 86.4 inches of rain each year with 10.8 inches of snow.
There is an average of 4:39 hours of sun each day in Dekalb County.
| Stat | Dekalb County |
|---|---|
| Mean High | 67.0 |
| Nice Days | 75.15 |
| Rainfall | 86.4 |
| Snowfall | 10.8 |
| Sunny Hours | 4:39 |
The current population in Dekalb County is 100,512. The population has decreased -3.3% from 2019.
| Year | Population | % Change |
|---|---|---|
| 2023 | 100,922 | -3.5% |
| 2022 | 104,588 | 0.2% |
| 2021 | 104,366 | - |
Dekalb County is 50.2% female with 50,497 female residents.
Dekalb County is 49.8% male with 50,015 male residents.
| Gender | Dekalb County | IL | USA |
|---|---|---|---|
| Female | 50.2% | 50.6% | 50.5% |
| Male | 49.8% | 49.4% | 49.5% |
Dekalb County is:
72.4% White with 72,768 White residents.
7.7% African American with 7,691 African American residents.
0.1% American Indian with 70 American Indian residents.
2.1% Asian with 2,070 Asian residents.
0.0% Hawaiian with 0 Hawaiian residents.
0.2% Other with 230 Other residents.
3.6% Two Or More with 3,608 Two Or More residents.
14.0% Hispanic with 14,075 Hispanic residents.
| Race | Dekalb County | IL | USA |
|---|---|---|---|
| White | 72.4% | 58.7% | 58.2% |
| African American | 7.7% | 13.6% | 12.0% |
| American Indian | 0.1% | 0.1% | 0.5% |
| Asian | 2.1% | 5.8% | 5.7% |
| Hawaiian | 0.0% | 0.0% | 0.2% |
| Other | 0.2% | 0.3% | 0.5% |
| Two Or More | 3.6% | 3.0% | 3.9% |
| Hispanic | 14.0% | 18.5% | 19.0% |
7.5% of households in Dekalb County earn Less than $10,000.
3.7% of households in Dekalb County earn $10,000 to $14,999.
8.0% of households in Dekalb County earn $15,000 to $24,999.
7.2% of households in Dekalb County earn $25,000 to $34,999.
10.5% of households in Dekalb County earn $35,000 to $49,999.
16.5% of households in Dekalb County earn $50,000 to $74,999.
11.9% of households in Dekalb County earn $75,000 to $99,999.
17.7% of households in Dekalb County earn $100,000 to $149,999.
9.6% of households in Dekalb County earn $150,000 to $199,999.
7.2% of households in Dekalb County earn $200,000 or more.
| Income | Dekalb County | IL | USA |
|---|---|---|---|
| Less than $10,000 | 7.5% | 5.2% | 4.9% |
| $10,000 to $14,999 | 3.7% | 3.4% | 3.6% |
| $15,000 to $24,999 | 8.0% | 6.2% | 6.6% |
| $25,000 to $34,999 | 7.2% | 6.5% | 6.8% |
| $35,000 to $49,999 | 10.5% | 9.9% | 10.4% |
| $50,000 to $74,999 | 16.5% | 15.1% | 15.7% |
| $75,000 to $99,999 | 11.9% | 12.7% | 12.7% |
| $100,000 to $149,999 | 17.7% | 17.9% | 17.4% |
| $150,000 to $199,999 | 9.6% | 9.9% | 9.3% |
| $200,000 or more | 7.2% | 13.1% | 12.6% |
4.0% of adults in Dekalb County completed < 9th grade.
4.0% of adults in Dekalb County completed 9-12th grade.
26.0% of adults in Dekalb County completed high school / ged.
24.0% of adults in Dekalb County completed some college.
10.0% of adults in Dekalb County completed associate's degree.
20.0% of adults in Dekalb County completed bachelor's degree.
10.0% of adults in Dekalb County completed master's degree.
1.0% of adults in Dekalb County completed professional degree.
1.0% of adults in Dekalb County completed doctorate degree.
| Education | Dekalb County | IL | USA |
|---|---|---|---|
| < 9th Grade | 4% | 5% | 5% |
| 9-12th Grade | 4% | 5% | 6% |
| High School / GED | 26% | 25% | 26% |
| Some College | 24% | 20% | 19% |
| Associate's Degree | 10% | 8% | 9% |
| Bachelor's Degree | 20% | 22% | 21% |
| Master's Degree | 10% | 11% | 10% |
| Professional Degree | 1% | 2% | 2% |
| Doctorate Degree | 1% | 2% | 2% |
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