San Marcos, CA ZIP codes
San Marcos, California has 4 ZIP codes, including 1 PO Box ZIP. They are in San Diego County.
- Population in these ZIPs
- 100,940
- Avg. median income
- $109,200population-weighted
- Typical home value
- $971,000population-weighted
- Metro area
- San Diego-Chula Vista-Carlsbad, CA
Loading map…
Click anywhere on the map to see which ZIP code it's in.
San Marcos, CA ZIP codes list
| ZIP code | County | Population | Median income | Typical home value |
|---|---|---|---|---|
| 92069 | San Diego County | 47,335 | $96,771 | $892,600 |
| 92078 | San Diego County | 53,605 | $120,268 | $1,040,200 |
| 92079 PO Box | San Diego County | — | — | — |
| 92096 | San Diego County | 0 | — | — |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities near San Marcos
- Escondido 5 mi
- Vista 6 mi
- Rancho Santa Fe 7 mi
- Carlsbad 8 mi
- Encinitas 9 mi
- Bonsall 10 mi
- Cardiff By The Sea 10 mi
- Solana Beach 11 mi
- Oceanside 12 mi
- Valley Center 12 mi
- Del Mar 13 mi
- Poway 14 mi
Frequently asked questions
What is the ZIP code for San Marcos, CA?
San Marcos, CA has 4 ZIP codes: 92069, 92078, 92079 and 92096.
What county is San Marcos, California in?
San Marcos ZIP codes are in San Diego County.
Which San Marcos ZIP codes are PO Boxes?
92079 is a PO Box or single-organization ZIP code; it has no residential delivery area.