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DeKalb, IL
Full City Profile · Illinois · DeKalb County County
2.9
/5.0
C+
Fair
40,464
Population
2,310/sq mi density
$46,564
Median Income
$27,180 per capita
$202,900
Home Value
$247,603 Zillow
$1,030
Median Rent
39.6% income on rent
49°F
Avg Temperature
275 sunny days/yr
577
Violent Crime/100K
3,026 property/100K
C+
Overall
2.9 / 5.0
Fair overall score based on economy, affordability, safety and education
C+
Economy
2.5 / 5.0
$46,564 median income, 7.2% unemployment
A
Affordability
4.2 / 5.0
$202,900 home value, $1,030/mo rent
F
Safety
1.0 / 5.0
577 violent crimes/100K (52% above avg)
B+
Education
3.9 / 5.0
35.7% bachelor's degree or higher
Change Over Time (2013–2023)
Population Change
-6.8%
43,265 → 40,317
over 10 years
Annual Pop. Growth
-0.7%
Compound annual growth rate
Median Income Change
+23.4%
$37,719 → $46,564
nominal, not inflation-adjusted
Annual Income Growth
+2.13%
Compound annual growth rate
Population Over Time
Total population for DeKalb across each available Census ACS release.
Median Household Income Over Time
Median household income reported by U.S. Census ACS. Values are nominal (not adjusted for inflation).
Projected 2030
Simple projections extrapolating the 2013–2023 compound annual growth rate forward. These are mathematical extensions of recent trends, not forecasts — real outcomes depend on migration, policy and economic shifts.
Projected Population 2030
38,382
-1,935 from 2023 (40,317)
Projected Median Income 2030
$53,966
+$7,402 from 2023 ($46,564)
Year-by-Year Detail
| Year | Population | YoY % | Median Income | YoY % |
|---|---|---|---|---|
| 2013 | 43,265 | — | $37,719 | — |
| 2015 | 42,990 | -0.6% | $37,954 | +0.6% |
| 2017 | 42,871 | -0.3% | $41,009 | +8% |
| 2019 | 42,950 | +0.2% | $45,020 | +9.8% |
| 2021 | 40,486 | -5.7% | $45,591 | +1.3% |
| 2023 | 40,317 | -0.4% | $46,564 | +2.1% |
Source: U.S. Census ACS 5-Year Estimates (Data Commons). Home value and rent are not yet available historically.