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Castle Hill, CA
Full City Profile · California · San Mateo County County
3.3
/5.0
B
Good
1,303
Population
2,208/sq mi density
$250,001
Median Income
$100,336 per capita
$2,000,001
Home Value
$1,024,673 Zillow
62°F
Avg Temperature
330 sunny days/yr
110
Violent Crime/100K
3,610 property/100K
B
Overall
3.3 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
5.0 / 5.0
$250,001 median income, 0.0% unemployment
C
Affordability
2.1 / 5.0
$2,000,001 home value, /mo rent
F
Safety
1.0 / 5.0
110 violent crimes/100K
A+
Education
5.0 / 5.0
79.2% bachelor's degree or higher
Change Over Time (2013–2023)
Population Change
+6.5%
1,223 → 1,303
over 10 years
Annual Pop. Growth
+0.64%
Compound annual growth rate
Median Income Change
+105.8%
$121,466 → $250,001
nominal, not inflation-adjusted
Annual Income Growth
+7.49%
Compound annual growth rate
Population Over Time
Total population for Castle Hill 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
1,363
+60 from 2023 (1,303)
Projected Median Income 2030
$414,494
+$164,493 from 2023 ($250,001)
Year-by-Year Detail
| Year | Population | YoY % | Median Income | YoY % |
|---|---|---|---|---|
| 2013 | 1,223 | — | $121,466 | — |
| 2015 | 1,204 | -1.6% | $114,784 | -5.5% |
| 2017 | 1,232 | +2.3% | $128,929 | +12.3% |
| 2019 | 1,426 | +15.7% | $204,879 | +58.9% |
| 2021 | 920 | -35.5% | $215,625 | +5.2% |
| 2023 | 1,303 | +41.6% | $250,001 | +15.9% |
Source: U.S. Census ACS 5-Year Estimates (Data Commons). Home value and rent are not yet available historically.