ZIP codes
3
San Marcos, CA Demographics & ZIP Codes
San Marcos, California demographics and median household income by ZIP code (in San Diego County) — 3 ZIP codes — population 100,367 — median income $103,985 — avg. home value $794,350. Compare income, housing, and population across ZIP codes on US5.
Population
100,367
Median household income (avg.)
$103,985
138% of U.S. median
Average home value
$794,350
228% of U.S. median
Average rent
$2,136
184% of U.S. median
Median age (avg.)
37.6
San Marcos demographics
San Marcos, California covers 3 ZIP codes primarily in San Diego County, with a combined ZIP-area population of about 100,367.
Across ZIP codes with age data, the average median age is about 37.6 years.
Median household income in San Marcos
The average median household income across ZIP codes in San Marcos, California is about $103,985 — about 6% above the CA ZIP average ($98,324), and about 38% above the U.S. median ($75,149).
Among ZIPs with income data, 92078 is near the top at about $114,905, while 92069 is near the bottom at about $93,065.
Housing in San Marcos
For housing in San Marcos, California, the average median home value is about $794,350 and the average median rent is about $2,136.
The most populous ZIP in this set is 92078 (about 53,542 residents). Use the table below to compare population, income, and home values across codes.
ZIP codes in San Marcos
Sort by population, income, or home value. Click a column header to toggle ascending / descending.
| ZIP | City | County | State | Population ↓ | Income | Home value |
|---|---|---|---|---|---|---|
| 92078 | San Marcos | San Diego County | CA | 53,542 | $114,905 | $874,000 |
| 92069 | San Marcos | San Diego County | CA | 46,825 | $93,065 | $714,700 |
| 92096 | San Marcos | San Diego County | CA | — | — | — |
Frequently asked questions
What are the demographics of San Marcos?
San Marcos, California has a combined ZIP-area population of about 100,367 across 3 ZIP codes (primarily San Diego County). Browse the ZIP table below for population, income, and housing by code.
What is the median household income in San Marcos?
The average median household income across ZIP codes in San Marcos, California is about $103,985, about 6% above the state ZIP average ($98,324), and about 38% above the U.S. median ($75,149). Average median home value is about $794,350. Among ZIPs with data, 92078 is near the top ($114,905) and 92069 is near the bottom ($93,065).
How many ZIP codes are in San Marcos?
San Marcos, California includes 3 ZIP codes on US5. Each row links to demographics, median income, and housing for that code.
Where can I find ZIP code demographics for San Marcos?
This page lists ZIP codes in San Marcos, California with population, median household income, and home value. Select a ZIP for a full demographics profile.