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South Dennis, MA
Full City Profile · Massachusetts · Barnstable County County
3.3
/5.0
B
Good
3,190
Population
701/sq mi density
$86,500
Median Income
$48,122 per capita
$454,400
Home Value
$651,322 Zillow
$1,542
Median Rent
31.3% income on rent
50°F
Avg Temperature
275 sunny days/yr
469
Violent Crime/100K
2,565 property/100K
B
Overall
3.3 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.7 / 5.0
$86,500 median income, 2.1% unemployment
B+
Affordability
3.7 / 5.0
$454,400 home value, $1,542/mo rent
F
Safety
1.0 / 5.0
469 violent crimes/100K (23% above avg)
B+
Education
4.0 / 5.0
37.1% bachelor's degree or higher
Change Over Time (2013–2023)
Population Change
-5%
3,358 → 3,190
over 10 years
Annual Pop. Growth
-0.51%
Compound annual growth rate
Median Income Change
+102.1%
$42,794 → $86,500
nominal, not inflation-adjusted
Annual Income Growth
+7.29%
Compound annual growth rate
Population Over Time
Total population for South Dennis 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
3,078
-112 from 2023 (3,190)
Projected Median Income 2030
$141,557
+$55,057 from 2023 ($86,500)
Year-by-Year Detail
| Year | Population | YoY % | Median Income | YoY % |
|---|---|---|---|---|
| 2013 | 3,358 | — | $42,794 | — |
| 2015 | 3,428 | +2.1% | $48,299 | +12.9% |
| 2017 | 3,635 | +6% | $49,868 | +3.2% |
| 2019 | 3,393 | -6.7% | $59,963 | +20.2% |
| 2021 | 3,259 | -3.9% | $73,485 | +22.6% |
| 2023 | 3,190 | -2.1% | $86,500 | +17.7% |
Source: U.S. Census ACS 5-Year Estimates (Data Commons). Home value and rent are not yet available historically.