Lake San Marcos
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Get to know Lake San Marcos.
Lake San Marcos is a census-designated place, San Diego County, California.
Lake San Marcos in context
Lake San Marcos is a census-designated place in San Diego County, California.
The 2020 Census recorded 5,328 residents and 2,615 housing units for its 2020 geography. The figures below also identify the date and source for each statistic.
The Census geography used here lists a land area of 4.4 square kilometres. A place name, its postal addresses and its official statistical boundary can describe different areas, so use the linked map sources for boundary questions.
Other mapped places to explore include San Marcos, Elfin Forest and La Costa. The locator section lists straight-line distances between geographic reference points, rather than road or walking distances.
Community details
- USGS topographic map
- San Marcos Source ↗
- USGS geographic name ID
- 1660879 Source ↗
- Population
- 5,328 (2020 Census geography) Source ↗
- Housing units
- 2,615 (2020 Census geography) Source ↗
- Median owner-occupied home value (survey estimate)
- $917,000 ± $70,499 (2020–2024 ACS 5-year) Source ↗
- Median monthly gross rent (survey estimate)
- $2,585 ± $214 (2020–2024 ACS 5-year) Source ↗
- Households (survey estimate)
- 2,000 ± 237 (2020–2024 ACS 5-year) Source ↗
- Owner-occupied households (survey estimate)
- 1,581 ± 203 (2020–2024 ACS 5-year) Source ↗
- Renter-occupied households (survey estimate)
- 419 ± 115 (2020–2024 ACS 5-year) Source ↗
- Land area (2020 Census)
- 4.421 km² (1.707 sq mi) (2020 Census geography) Source ↗
- Water area (2020 Census)
- 0.266 km² (0.103 sq mi) (2020 Census geography) Source ↗
- Population per land area (2020 Census)
- 1,205.2 people/km² (3,121.5 people/sq mi) (2020 Census geography) Source ↗
American Community Survey estimates cover 2020–2024 and show the 90% margin of error when available. Gross rent includes rent and applicable tenant-paid utilities. Census and survey figures describe the geography used for that release; housing estimates are historical survey figures rather than current asking prices.
Area figures use the 2020 Census boundary. Population density is calculated from the 2020 Census population divided by its land area, excluding water.
Locate Lake San Marcos
Other mapped places to explore
- San Marcos 4.0 km between map reference points
- Elfin Forest 4.8 km between map reference points
- La Costa 6.1 km between map reference points
Distances are straight-line measurements between mapped reference points, rather than walking or driving distances.
Local information and resources
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Homes for sale in Lake San Marcos
Listings with mapped coordinates inside the published U.S. Census Bureau place boundary. Listing address-city names can differ from this mapped area.
Scroll within the listings to see more homes and source details. Property links open on LocalRealtors.
From local creators
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Location sources
Neighborhood names and boundaries can overlap and vary by source.