US Census Data

El Cajon vs San Marcos

A side-by-side comparison of El Cajon and San Marcos: population, income, housing, and more.

El Cajon and San Marcos are places in California. This page compares them across population, income, housing, education, commuting, and how each has changed since 2019.

El Cajon has the higher population (104,909 vs 94,078 in San Marcos). San Marcos has the higher median household income ($105,286 vs $66,478 in El Cajon). San Marcos has the higher median home value ($792,400 vs $632,800 in El Cajon).

Population, income & housing

El CajonSan Marcos
Population104,90994,078
Median age35.5 yrs36.8 yrs
Median household income$66,478$105,286
Median home value$632,800$792,400
Median gross rent$1,790$2,191
Housing units35,26432,255
Homeownership rate41.1%63.0%
Bachelor's degree or higher22.2%42.7%
Unemployment rate9.2%4.5%

Trends (ACS 5-year, 2019–2023)

El CajonSan Marcos
Population103,186 → 104,909 (+1.7%)95,355 → 94,078 (-1.3%)
Median household income$55,309 → $66,478 (+20.2%)$78,797 → $105,286 (+33.6%)
Median home value$445,600 → $632,800 (+42.0%)$538,200 → $792,400 (+47.2%)
Median gross rent$1,339 → $1,790 (+33.7%)$1,704 → $2,191 (+28.6%)

El Cajon

Population
103,186104,909
Median household income
$55,309$66,478
Median home value
$445,600$632,800
Median gross rent
$1,339$1,790

San Marcos

Population
95,35594,078
Median household income
$78,797$105,286
Median home value
$538,200$792,400
Median gross rent
$1,704$2,191

Age & race/ethnicity

Age distribution (share)

El CajonSan Marcos
Under 57.4%6.2%
5 to 1718.5%19.4%
18 to 248.6%9.7%
25 to 3414.6%12.4%
35 to 4414.1%15.4%
45 to 5411.1%12.7%
55 to 6411.9%10.9%
65 to 748.5%7.7%
75 and over5.2%5.6%

Race & ethnicity (share)

El CajonSan Marcos
White (non-Hispanic)53.3%44.4%
Black or African American6.0%1.3%
American Indian & Alaska Native0.2%0.2%
Asian4.5%10.7%
Native Hawaiian & Pacific Islander0.7%0.0%
Some other race0.5%0.4%
Two or more races5.7%5.6%
Hispanic or Latino29.1%37.3%

Educational attainment (age 25+)

Share of adults 25+

El CajonSan Marcos
No high school diploma15.6%11.9%
High school graduate28.9%16.9%
Some college or associate's33.3%28.4%
Bachelor's degree15.3%28.4%
Graduate or professional degree6.9%14.4%

Commute to work

How workers get to work (share)

El CajonSan Marcos
Drove alone72.8%69.8%
Carpooled9.3%7.9%
Public transit2.6%0.5%
Walked2.5%1.6%
Bicycle0.6%0.5%
Worked from home10.2%18.7%
Other means2.1%1.0%

Housing

Units in structure (share)

El CajonSan Marcos
1-unit, detached38.7%51.1%
1-unit, attached6.3%10.2%
2 to 4 units8.0%3.9%
5 to 19 units17.7%8.3%
20 or more units24.5%15.8%
Mobile home & other5.0%10.8%

Poverty & households

El CajonSan Marcos
Poverty rate20.0%10.2%
Average household size2.992.99
Mean commute (minutes)2527
Median year structure built19741994

Full profiles

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El Cajon vs San Marcos: Compare Population & Demographics | US Census Data