California county · 29 named communities
San Mateo County gas prices
$6.09 / gal Regular average · 144 locations
How we compare prices
Regular gasoline only. We compare the county average today with its average yesterday and on the same date last month. Each average uses the available stations at that time, with prices no more than 36 hours old. The mix of stations and payment conditions can change, so this is an indicative county trend.
Yesterday: Oct 21, 2026: $6.110/gal, 126 locations. Last month: Sep 22, 2026: $6.099/gal, 5 locations. Cutoffs use the same local time in California; a shorter month uses its last day. Monthly comparisons need at least 3 stations on each date; daily comparisons need 12. Past averages are reconstructed from recorded observations.
Current county averages
San Mateo County price benchmark
Median $6.00 · middle 80% $5.80–$6.50
144 current station prices
Median $6.30 · middle 80% $6.10–$6.70
71 current station prices
Median $6.48 · middle 80% $6.22–$6.90
85 current station prices
Median $8.95 · middle 80% $8.70–$9.20
36 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.Local driving guide
Two sides of the Peninsula
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San Mateo County spans the Peninsula between San Francisco Bay and the Pacific Ocean. Coastal destinations and bayside communities are separated in places by the Santa Cruz Mountains.
Plan your fuel stop
For San Mateo County trips, choose the correct side of the Peninsula first. A lower average across the hills does not establish that the detour will save money.
Compare local benchmarks
Regular gas prices by city in San Mateo County
3 city benchmarks with eligible prices. Lower averages describe these samples, not a guaranteed saving at a particular station. Coverage differs between cities; compare your route before making a detour.
Redwood City
$6.00/ gal averageMedian $6.00 · 19 Regular prices
Daly City
$6.08/ gal averageMedian $5.98 · 18 Regular prices
San Mateo
$6.08/ gal averageMedian $6.06 · 18 Regular prices
How San Mateo County compares
The current regular average is $0.04 per gallon above the California average.
The middle 80% of Regular prices spans $5.80 to $6.50.
What that spread means
Across a 10-gallon purchase, the current middle-range difference is about $7.00 before detour fuel and time.
Coverage in this benchmark
144 Regular-price locations across 64 postal codes and 29 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.