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USA › California › San Marcos

Gas Stations in San Marcos, California

Browse registered motor vehicle fueling facilities in San Marcos, California. Station information comes from the California SWRCB permitted UST dataset.

15
registered stations in San Marcos

Gas prices in San Marcos: California weekly average

EIA weekly statewide average for California – not a price at individual San Marcos stations · week of Nov 9, 2026

Regular$5.562▼ −$0.186 vs last week
Midgrade$5.892▼ −$0.176 vs last week
Premium$6.031▼ −$0.173 vs last week
Diesel$7.897▼ −$0.179 vs last week

A 15-gallon fill-up of regular costs about $83.43 at this average, $1.57 per gallon above the U.S. average of $3.995. Pump prices at individual stations in San Marcos can be higher or lower. California price history →

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All gas stations in San Marcos

Station source: California State Water Resources Control Board (SWRCB), Permitted USTs. No station-level fuel price is displayed unless a verified price source is available.