San Marcos is a city located in San Diego County, California. San Marcos has a 2025 population of 93,747. San Marcos is currently declining at a rate of -0.23% annually and its population has decreased by -1.16% since the most recent census, which recorded a population of 94,849 in 2020.
The average household income in San Marcos is $131,847 with a poverty rate of 10.17%.The median age in San Marcos is 36.8 years: 35.6 years for males, and 37.7 years for females.
Data after 2023 is projected based on recent change
The racial composition of San Marcos includes 55.11% White, 12.36% other race, 10.89% Asian, and smaller percentages for Black or African American, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
Race | Population | Percentage (of total) |
---|---|---|
White | 51,844 | 55.11% |
Two or more races | 18,137 | 19.28% |
Other race | 11,628 | 12.36% |
Asian | 10,241 | 10.89% |
Black or African American | 1,391 | 1.48% |
Native American | 754 | 0.8% |
Native Hawaiian or Pacific Islander | 83 | 0.09% |
Married
Widowed
Divorced
Separated
Never Married
San Marcos' average per capita income is $59,450. Household income levels show a median of $105,286. The poverty rate stands at 10.17%.
Name | Median | Mean |
---|---|---|
Married Families | $144,636 | $167,453 |
Families | $124,686 | $148,661 |
Households | $105,286 | $131,847 |
Non Families | $55,633 | $74,755 |
Average Income
Median Household Income
Poverty Rate