What to know about ZIP 92096
ZIP code 92096 covers San Marcos, CA in San Diego County.
It sits in telephone area codes 442, 760; U.S. House district CA-50; the SAN DIEGO media market.
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San Marcos city, CA
ZIP Code 92096 — San Marcos city, CA Demographics & Data
Source: U.S. Census Bureau ACS 2019–2023 5-Year Estimates. Page data updated 2026-08-02.
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At a glance
Overview of ZIP Code 92096
Climate risk and migration signals
FEMA’s National Risk Index rates natural-hazard risk for San Marcos city, CA as Very High (composite score 99.7), which is among the highest nationally. The strongest component scores on US5 are wildfire (100.0) and flood (99.7). These scores are county-linked NRI values published for planning context — all ZIP codes in the same county share the same composite score on US5. Useful when comparing insurance and disaster exposure across areas, not a substitute for a parcel-level flood or fire determination.
Climate normals for San Marcos city, CA show limited published climate normals on US5.