San Mateo · San Mateo County
San Mateo gas prices
$6.08 / gal Regular average · 18 locations
How we compare prices
Regular gasoline only. We compare the city 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 city trend.
Yesterday: Oct 21, 2026: $6.118/gal, 15 locations. Last month: Sep 22, 2026: 0 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 city averages
A current price benchmark for San Mateo
Median $6.06 · middle 80% $5.88–$6.26
18 station prices · observations from Oct 21, 2026 through 10/22/2026, 7:34:52 PM PDT
Median $6.33 · middle 80% $6.15–$6.44
10 station prices · observations from Oct 21, 2026 through 10/22/2026, 7:40:02 PM PDT
Median $6.56 · middle 80% $6.36–$6.90
11 station prices · observations from Oct 21, 2026 through 10/22/2026, 7:58:15 PM PDT
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.Local driving guide
A Peninsula city between Bay and hills
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San Mateo sits on the San Francisco Peninsula with the Bay and Foster City to the east and Hillsborough to the west.
Plan your fuel stop
Use the San Mateo street address before comparing fuel; bayside and western destinations can favor different stops within the same city index.
Our local data
What WorthStop covers in San Mateo
- Fuel locations in our catalog
- 26
- Locations in the Regular-price benchmark
- 18
Catalog locations and recent price observations are different measures. Records here use the San Mateo city address label; this is not a census of every station within the municipal boundary. Separately named neighborhoods may appear on their own pages.
- 15 with store information
- 3 with food information
- 3 with recorded opening hours
Missing details mean unknown information, not that a service is absent. Recorded amenities and hours can change. Known restricted sites are excluded from this catalog count; access at other sites may still be unconfirmed. Check the individual location before traveling.
Read our data methodologySan Mateo and San Mateo County
San Mateo County Regular average: $6.09 per gallon, from 144 station prices.
The city average is $0.01 per gallon below this benchmark. Broader samples can include this city's stations; these are overlapping geographic benchmarks, not separate competing offers.
San Mateo and San Francisco Bay Area
San Francisco Bay Area Regular average: $6.05 per gallon, from 1434 station prices.
The city average is $0.03 per gallon above this benchmark. Broader samples can include this city's stations; these are overlapping geographic benchmarks, not separate competing offers.
How San Mateo compares
The current regular average is $0.03 per gallon above the California average.
The middle 80% of current regular prices spans $5.88 to $6.26, a $0.38 per-gallon range.
What that spread means
Across a 10-gallon purchase, the current 10th-to-90th percentile difference is about $3.80 before accounting for detour fuel and time.
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.