The Town FilesLake San Marcos, California
Community in San Diego County · population 5,328 (2020 Census)
- Median home
- $917,000
- Household income
- $89,851
- Jan low / Jul high
- 48° / 74°
- Snow a year
- 0 in
- Tornadoes ≤10 mi since 1950
- 8
- Median age
- 63.0
Lake San Marcos is a community of 5,328 people in San Diego County, California. The median home is worth $917,000, above the typical California town ($596,900). It ranks more upscale than 83% of California towns, better for families than 81% of California towns, more of a college town than 81% of California towns.
How Lake San Marcos ranks
Percentile among California towns with at least 500 people on The Town Files lifestyle rankings. 50 is typical for the state; 90 means better than 90% of California towns.
Homes and cost of living
The median home in Lake San Marcos is worth $917,000, above the typical California town ($596,900). Homes cost about 10.2 times the median household income of $89,851, which is more affordable than 8% of California towns. Median rent is $2,585 a month. 79.0% of households own their home.
| Housing | Lake San Marcos | Typical California town |
|---|---|---|
| Median home value | $917,000 | $596,900 |
| Median rent | $2,585 | $1,827 |
| Median household income | $89,851 | $91,557 |
| Home value ÷ income | 10.2× | 6.4× |
| Homeownership | 79.0% | 67.4% |
| Median year built | 1979 | 1977 |
| Seasonal / vacation homes | 0.0% | — |
Who lives in Lake San Marcos
| People | Lake San Marcos | Typical California town |
|---|---|---|
| Median age | 63.0 | 40.2 |
| Age 65 and over | 46.7% | 17.7% |
| Under 18 | 8.3% | — |
| Bachelor's degree or higher | 35.6% | 27.7% |
| Below the poverty line | 6.0% | 10.3% |
| Veterans | 8.6% | — |
| Born outside the U.S. | 21.5% | — |
| Work from home | 23.5% | 13.4% |
| Average commute | 23.5 min | 27.5 min |
| Homes with broadband | 93.7% | 93.3% |
Weather in Lake San Marcos
July highs average 74.2°F and January lows 47.8°F. About 11.4 inches of rain and melted snow fall a year, with 0.0 inches of snow (typical California town: 0.0 in). Expect about 3 days a year at 90°F or hotter and 0 nights at or below freezing.
Tornadoes, storms and disasters
8 tornadoes have passed within 10 miles of Lake San Marcos since 1950, compared with 2 for the typical California town. The strongest, an F1, struck on January 29, 1998 about 7.3 miles from the town center. The most recent was on September 22, 2007.
Hail of 1 inch or larger has been reported within 10 miles 2 times; the largest was 1.00 inches on March 11, 2006.
Severe weather in San Diego County since 1996
San Diego County has been included in 51 federal disaster or emergency declarations since 1953, most often for fire, flood, freezing.
| Declared | Incident | Declaration |
|---|---|---|
| February 19, 2024 | Flood | DR-4758: Severe Storm And Flooding |
| January 14, 2023 | Flood | DR-4683: Severe Winter Storms, Flooding, Landslides, And Mudslides |
| January 9, 2023 | Flood | EM-3591: Severe Winter Storms, Flooding, And Mudslides |
| October 16, 2020 | Fire | DR-4569: Wildfires |
| March 22, 2020 | Biological | DR-4482: Covid-19 Pandemic |
Jobs and pay in San Diego County
San Diego County had 1,536,541 jobs in 2024, paying an average of $82,854 a year. Unemployment was 3.9% in 2023; in Lake San Marcos itself the ACS puts it at 4.1%.
Towns near Lake San Marcos
- San Marcos, CA2.3 mi · 94,833 people · home $868,000
- Carlsbad, CA4.4 mi · 114,746 people · home $1,257,000
- Vista, CA5.0 mi · 98,381 people · home $762,400
- Encinitas, CA5.9 mi · 62,007 people · home $1,646,800
- Rancho Santa Fe, CA6.7 mi · 3,156 people · home $2,000,001
- Escondido, CA7.8 mi · 151,038 people · home $714,500
- Hidden Meadows, CA8.7 mi · 4,484 people · home $851,100
- Oceanside, CA9.0 mi · 174,068 people · home $770,300
Lake San Marcos questions
Is Lake San Marcos, California a good place to retire?
On The Town Files lifestyle rankings, Lake San Marcos scores better for retirees than 68% of California towns and quieter than 36%. 46.7% of residents are 65 or older (median age 63.0).
How much does a house cost in Lake San Marcos?
The median owner-occupied home in Lake San Marcos is valued at $917,000 (Census ACS 2020–2024), against a median household income of $89,851, so homes cost about 10.2 times income. Median rent is $2,585 a month.
What is the weather like in Lake San Marcos?
July highs average 74.2°F and January lows 47.8°F (NOAA 1991–2020 normals). It gets about 11.4 inches of precipitation a year and 0.0 inches of snow.
Does Lake San Marcos get tornadoes?
8 tornadoes have passed within 10 miles of Lake San Marcos since 1950 (NOAA Storm Events); the strongest was a F1 on January 29, 1998. The typical California town has had 2.
- U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024)
- U.S. Census Bureau, 2020 Census and 2025 Gazetteer (2020 / 2025)
- NOAA NCEI U.S. Climate Normals (1991–2020)
- NOAA NCEI Storm Events Database (1950–2026)
- FEMA OpenFEMA Disaster Declarations (this product uses the FEMA OpenFEMA API but is not endorsed by FEMA) (1953–2026)
- NCES Common Core of Data (2023–24)
- BLS Quarterly Census of Employment and Wages; USDA ERS county unemployment (BLS LAUS) (2000–2024)
- The Town Files lifestyle rankings, built from federal demographic, school, crime and housing data (2025)