WorthStop

California county · 26 named communities

Current gas-price averages in San Mateo County.

Use the county benchmark for local context, then compare stops on your actual route before choosing where to refuel.

Compare stops in San Mateo Data through Sep 3, 2026, 8:30 PM PDT · Updated automatically

Current county averages

San Mateo County price benchmark

143 Regular-price locations
Regular$5.96average per gallon

Median $6.00 · middle 80% $5.50–$6.30

143 current station prices

Midgrade$6.21average per gallon

Median $6.20 · middle 80% $5.81–$6.50

62 current station prices

Premium$6.40average per gallon

Median $6.40 · middle 80% $5.92–$6.70

84 current station prices

Diesel$8.20average per gallon

Median $8.26 · middle 80% $7.90–$8.40

33 current station prices

WorthStop rebuilds this county aggregate from the latest eligible price at each covered station. Individual timestamps vary and posted prices can change.

Source: WorthStop.

How San Mateo County compares

The current regular average is $0.14 per gallon above the California average.

The middle 80% of Regular prices spans $5.50 to $6.30.

What that spread means

Across a 10-gallon purchase, the current middle-range difference is about $8.00 before detour fuel and time.

Coverage in this benchmark

143 Regular-price locations across 49 postal codes and 26 named communities.

Why your route still matters

A county average is context, not a station recommendation. WorthStop compares grade, gallons, vehicle MPG and actual extra driving for each trip.