All Countries
Rochester, IL
Full City Profile · Illinois · Sangamon County County
4.0
/5.0
A
Great
3,784
Population
1,412/sq mi density
$112,689
Median Income
$47,562 per capita
$241,900
Home Value
$286,124 Zillow
$1,333
Median Rent
22.5% income on rent
53°F
Avg Temperature
293 sunny days/yr
108
Violent Crime/100K
619 property/100K
A
Overall
4.0 / 5.0
Strong
A+
Economy
5.0 / 5.0
$112,689 median income, 2.1% unemployment
A+
Affordability
5.0 / 5.0
$241,900 home value, $1,333/mo rent
F
Safety
1.0 / 5.0
108 violent crimes/100K
A+
Education
5.0 / 5.0
49.9% bachelor's degree or higher
Change Over Time (2013–2023)
Population Change
+3.6%
3,782 → 3,919
over 10 years
Annual Pop. Growth
+0.36%
Compound annual growth rate
Median Income Change
+26.8%
$88,839 → $112,689
nominal, not inflation-adjusted
Annual Income Growth
+2.41%
Compound annual growth rate
Population Over Time
Total population for Rochester 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
4,019
+100 from 2023 (3,919)
Projected Median Income 2030
$133,131
+$20,442 from 2023 ($112,689)
Year-by-Year Detail
| Year | Population | YoY % | Median Income | YoY % |
|---|---|---|---|---|
| 2013 | 3,782 | — | $88,839 | — |
| 2015 | 3,789 | +0.2% | $92,188 | +3.8% |
| 2017 | 3,761 | -0.7% | $94,643 | +2.7% |
| 2019 | 3,728 | -0.9% | $96,111 | +1.6% |
| 2021 | 3,840 | +3% | $105,140 | +9.4% |
| 2023 | 3,919 | +2.1% | $112,689 | +7.2% |
Source: U.S. Census ACS 5-Year Estimates (Data Commons). Home value and rent are not yet available historically.