San Marcos · San Diego County
Current San Marcos gas-price averages.
Use the current city benchmark to understand the market, then compare price and detour for your actual trip before choosing a stop.
Compare stops near San MarcosData through Sep 3, 2026, 8:30 PM PDT · Refreshed Sep 4, 2026Current city averages
A current price benchmark for San Marcos
Median $5.97 · middle 80% $5.85–$6.18
16 current station prices
Median $6.20 · middle 80% $6.07–$6.40
8 current station prices
Median $6.40 · middle 80% $6.30–$6.66
11 current station prices
Median $7.90 · middle 80% $7.58–$8.08
7 current station prices
These planning averages use the latest eligible station price available in WorthStop data when the page was refreshed. Individual station timestamps vary and posted prices can change before arrival.
Source: WorthStop.How San Marcos compares
The current regular average is $0.19 per gallon above the California average.
The middle 80% of current regular prices spans $5.85 to $6.18, a $0.33 per-gallon range.
What that spread means
Across a 10-gallon purchase, the current 10th-to-90th percentile difference is about $3.32 before accounting for detour fuel and time.
Coverage behind the index
The current WorthStop index includes 16 Regular-price locations across 12 postal codes in San Marcos.
- 0 locations have store information
- 0 have food information
- 0 have known opening-hours data
Why your route still matters
A city average cannot identify the stop worth making. WorthStop ranks eligible stops for the route using the selected fuel grade, gallons, vehicle MPG and extra driving required.