Lake San Marcos, California
Lake San Marcos: census-designated place in San Diego County, California
About
Lake San Marcos is a CDP located in the county of San Diego in the U.S. state of California.
Quick Facts about Lake San Marcos
| Population | 4,437 |
| Country | United States of America |
| State | California (United States) |
| County | San Diego County |
| Postal code | 92069 |
| Phone Area Codes | 760 |
| Latitude & Longitude | 33.1262,-117.2084 |
| Altitude | 525 feet / 160 meters |
| Time Zone | Pacific Time Zone, UTC−07:00, UTC−08:00 |
| Local time | 08:05:33 (19th April 2026) |
| Weather | 54℉ Patchy Fog 7-days weather |
San Diego County California Incorporated and Unincorporated areas Lake San Marcos Highlighted locator map image
Geography
Lake San Marcos is located at 33°7'34"N 117°12'30"W (33.1261500, -117.2083700).
Lake San Marcos map
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Weather
54°F
Patchy Fog
0 to 5 mph N
Saturday Night
Patchy fog after 11pm. Partly cloudy, with a low around 54.
7-Day ForecastOther cities in San Diego County
Cities, towns, neighborhoods & other populated places in San Diego County , CA. (more)
| City Name | Population | Title |
|---|---|---|
| San Diego | 1,422,420 | The eighth most populous city in the United States and the center of the San Diego metropolitan area. |
| Chula Vista | 272,979 | The second most populous city in San Diego County, California. |
| Oceanside | 174,648 | The second most populous city in San Diego County, California. |
| Escondido | 149,943 | The second most populous city in San Diego County, California. |
| Carlsbad | 115,599 | The most populous city in San Diego County, California. |
| El Cajon | 102,401 | The second most populous city in San Diego County, California. |
| Vista | 100,636 | The most populous city in San Diego County, California. |
| San Marcos | 97,477 | The second most populous city in San Diego County, California. |
| Encinitas | 62,671 | The most populous city in San Diego County, California. |
| National City | 61,394 | The most populous city in San Diego County, California. |
| La Mesa | 59,724 | The most populous city in San Diego County, California. |
| Santee | 57,770 | A city in San Diego County, California. |
| Poway | 49,246 | A city in San Diego County, California. |
| La Presa | 34,169 | Census designated place |
| Fallbrook | 30,534 | Unincorporated community in San Diego County, California, United States |
| Spring Valley | 28,205 | Town in San Diego County, California, United States |
Distance to Other Cities
Lake San Marcos distances to largest California cities