Lake San Marcos, California Population 2024

4,080

Lake San Marcos is a city located in San Diego County California. Lake San Marcos has a 2024 population of 4,080. Lake San Marcos is currently declining at a rate of annually and its population has increased by 3.11% since the most recent census, which recorded a population of 3,957 in 2020.

The average household income in Lake San Marcos is $119,917 with a poverty rate of 5.16%. The median rental costs in recent years comes to - per month, and the median house value is -. The median age in Lake San Marcos is 64.5 years, 61.4 years for males, and 66.8 years for females.

Lake San Marcos Demographics

According to the most recent ACS, the racial composition of Lake San Marcos was:

  • White: 87.77%
  • Two or more races: 4.36%
  • Asian: 4.26%
  • Other race: 2.72%
  • Black or African American: 0.88%
  • Native American:
  • Native Hawaiian or Pacific Islander:
Land Area (mi²)
1.7 sq mi
Density (mi²)
2,390.30/sq mi
Growth Since 2020
3.11% (123)
The current population of Lake San Marcos, California is 4,080 based on our projections of the latest US Census estimates.The last official US Census in 2020 recorded the population at 3,957.

Lake San Marcos, California Population 2024

Population by Race

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Race
Population
Percentage (of total)
White3,58187.77%
Two or more races1784.36%
Asian1744.26%
Other race1112.72%
Black or African American360.88%
Native American
Native Hawaiian or Pacific Islander
showing: 7 rows

White

Two or more races

Asian

Other race

Black or African American

Native American

Native Hawaiian or Pacific Islander

Lake San Marcos Population by Race

Lake San Marcos Population Pyramid 2024

Lake San Marcos Median Age

64.5

Total

61.4

Male

66.8

Female

Lake San Marcos Adults

There are 3,704 adults, (2,007 of whom are seniors) in Lake San Marcos.

Lake San Marcos Age Dependency

140.4

Age Dependency Ratio

118.3

Old Age Dependency Ratio

22.2

Child Dependency Ratio

Lake San Marcos Sex Ratio

Female2,15052.7%
Male1,93047.3%

Lake San Marcos Population by Age

Lake San Marcos Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All2,1361.8981.318.7
Non Family9721.2180.619.4
Married9142.4386.813.2
Female2342.556238
Male161.941000
showing: 5 rows

2.41

Average Family Size

1.89

Average Household Size

81.3%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Lake San Marcos Households and Families

Male

Female

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Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

Lake San Marcos Educational Attainment by Sex (over 25)

Lake San Marcos Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

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The highest rate of high school graduation is among other race people with a rate of 100%.

The highest rate of bachelors degrees is among asian people with a rate of 75.17%.

Lake San Marcos Educational Attainment by Race

All

Male

Female

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$47,200

Average Earnings

$64,196

Average Male

$33,618

Average Female

Lake San Marcos Earnings by Educational Attainment

Lake San Marcos Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Lake San Marcos Language

88.06% of Lake San Marcos residents speak only English, while 11.94% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 5.34% of the population.

Lake San Marcos Language

Lake San Marcos Poverty by Race

rate

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Name
Total
In Poverty
Poverty Rate
White3,4531724.98%
Black3636100%
showing: 2 rows

5.16%

Overall Poverty Rate

5.13%

Male Poverty Rate

5.19%

Female Poverty Rate

Poverty in Lake San Marcos

The race most likely to be in poverty in Lake San Marcos is Black, with 100% below the poverty level.

The race least likely to be in poverty in Lake San Marcos is White, with 4.98% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was . Among those working part-time, it was 5.77%, and for those that did not work, the poverty rate was 6.55%.

Lake San Marcos Poverty

rate

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Rate
Poverty
Some College6.46%
High School4.55%
Bachelors or Greater3.9%
Less Than 9th Grade
showing: 4 rows

Lake San Marcos Poverty Rate by Education

rate

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Rate
Poverty
Male Employed5.62%
Male Unemployed
Female Employed
Female Unemployed
showing: 4 rows

Lake San Marcos Poverty Rate by Employment Status and Sex

Lake San Marcos Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

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mean

median

Income by Household Type

Lake San Marcos Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

48.4%

Overall Marriage Rate

52.6%

Male Marriage Rate

44.8%

Female Marriage Rate

Lake San Marcos Married by Age and Sex

male

female

Lake San Marcos Marriage

The age group where males are most likely to be married is Over 65, while the female age group most likely to be married is 35-44.

Lake San Marcos Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Lake San Marcos Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

510

Number of Veterans

464

Male Veterans

46

Female Veterans

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Lake San Marcos Veterans by War

count

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Lake San Marcos Veterans by Age

count

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Lake San Marcos Veterans by Race

Lake San Marcos Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

5.6%

Veteran Poverty Rate

43.4%

Veteran Disability Rate

Lake San Marcos Veterans by Education

LaborForceParticipation

47.7%

Labor Force Participation

45.6%

Employment Rate

4.5%

Unemployment Rate

Lake San Marcos Employment by Age

LaborForceParticipation

Lake San Marcos Employment by Race

LaborForceParticipation

Lake San Marcos Employment by Education

Origin of Non-Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

43.5%

Born in Lake San Marcos

86.57%

Native Born

13.43%

Foreign Born

2.89%

Non Citizen

10.54%

Naturalized

Place of Birth

86.57% of Lake San Marcos residents were born in the United States, with 43.5% having been born in California. 2.89% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Europe.

Lake San Marcos Place of Birth

Note: data after 2022 is projected based on recent change

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Year
Population
Growth
Growth Rate
20244,080
20234,080
20224,080-47-1.14%
20214,1271704.3%
20203,957-756-16.04%
20194,713-177-3.62%
20184,890-34-0.69%
20174,9243958.72%
20164,529-269-5.61%
20154,7981192.54%
20144,6793919.12%
20134,288-267-5.86%
20124,555-685-13.07%
20115,24080318.1%
20104,437
showing: 15 rows

Lake San Marcos Population by Year