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Diamond, IL
Full City Profile · Illinois · Grundy County County
3.5
/5.0
B+
Good
2,900
Population
1,526/sq mi density
$60,000
Median Income
$34,675 per capita
$211,500
Home Value
$297,303 Zillow
$1,224
Median Rent
34.8% income on rent
51°F
Avg Temperature
275 sunny days/yr
B+
Overall
3.5 / 5.0
Good overall score based on economy, affordability, safety and education
B+
Economy
3.7 / 5.0
$60,000 median income, 0.5% unemployment
A+
Affordability
4.7 / 5.0
$211,500 home value, $1,224/mo rent
D
Education
2.0 / 5.0
12.1% bachelor's degree or higher
Change Over Time (2013–2023)
Population Change
+6.5%
2,521 → 2,686
over 10 years
Annual Pop. Growth
+0.64%
Compound annual growth rate
Median Income Change
+5.1%
$57,102 → $60,000
nominal, not inflation-adjusted
Annual Income Growth
+0.5%
Compound annual growth rate
Population Over Time
Total population for Diamond 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
2,809
+123 from 2023 (2,686)
Projected Median Income 2030
$62,132
+$2,132 from 2023 ($60,000)
Year-by-Year Detail
| Year | Population | YoY % | Median Income | YoY % |
|---|---|---|---|---|
| 2013 | 2,521 | — | $57,102 | — |
| 2015 | 2,501 | -0.8% | $64,833 | +13.5% |
| 2017 | 2,499 | -0.1% | $57,298 | -11.6% |
| 2019 | 2,502 | +0.1% | $59,934 | +4.6% |
| 2021 | 2,657 | +6.2% | $57,870 | -3.4% |
| 2023 | 2,686 | +1.1% | $60,000 | +3.7% |
Source: U.S. Census ACS 5-Year Estimates (Data Commons). Home value and rent are not yet available historically.