All Countries
Lake San Marcos, CA
Full City Profile · California · Orange County County
2.9
/5.0
C+
Fair
4,996
Population
2,922/sq mi density
$100,676
Median Income
$57,383 per capita
$859,600
Home Value
$943,389 Zillow
$2,615
Median Rent
32.1% income on rent
63°F
Avg Temperature
330 sunny days/yr
216
Violent Crime/100K
1,416 property/100K
C+
Overall
2.9 / 5.0
Fair overall score based on economy, affordability, safety and education
A+
Economy
5.0 / 5.0
$100,676 median income, 1.7% unemployment
D
Affordability
1.8 / 5.0
$859,600 home value, $2,615/mo rent
F
Safety
1.0 / 5.0
216 violent crimes/100K
B+
Education
3.8 / 5.0
35.5% bachelor's degree or higher
Change Over Time (2013–2023)
Population Change
+16.5%
4,288 → 4,996
over 10 years
Annual Pop. Growth
+1.54%
Compound annual growth rate
Median Income Change
+122.2%
$45,302 → $100,676
nominal, not inflation-adjusted
Annual Income Growth
+8.31%
Compound annual growth rate
Population Over Time
Total population for Lake San Marcos 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
5,560
+564 from 2023 (4,996)
Projected Median Income 2030
$176,038
+$75,362 from 2023 ($100,676)
Year-by-Year Detail
| Year | Population | YoY % | Median Income | YoY % |
|---|---|---|---|---|
| 2013 | 4,288 | — | $45,302 | — |
| 2015 | 4,798 | +11.9% | $46,510 | +2.7% |
| 2017 | 4,924 | +2.6% | $63,599 | +36.7% |
| 2019 | 4,713 | -4.3% | $71,923 | +13.1% |
| 2021 | 4,127 | -12.4% | $91,308 | +27% |
| 2023 | 4,996 | +21.1% | $100,676 | +10.3% |
Source: U.S. Census ACS 5-Year Estimates (Data Commons). Home value and rent are not yet available historically.