California county · 32 named communities

Contra Costa County gas prices

$6.07 / gal Regular average · 244 locations

Since yesterday 4.6¢per gallon · 0.8% lower

Since last month 15.0¢per gallon · 2.5% higher

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: $6.111/gal, 225 locations. Last month: Sep 22, 2026: $5.915/gal, 15 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.

Compare stops in Contra Costa Data through Oct 22, 2026, 8:17 PM PDT · Updated automatically

Current county averages

Contra Costa County price benchmark

244 Regular-price locations

Regular$6.07average per gallon

Median $6.04 · middle 80% $5.70–$6.50

244 current station prices

Midgrade$6.38average per gallon

Median $6.30 · middle 80% $6.10–$6.70

119 current station prices

Premium$6.58average per gallon

Median $6.56 · middle 80% $6.26–$6.90

143 current station prices

Diesel$8.50average per gallon

Median $8.62 · middle 80% $7.90–$9.00

81 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

Strait-side cities and inland East Bay communities

Todos Santos Plaza in Concord (photographed 2009). Photo: Geraoma · CC BY 3.0. Resized and converted to WebP; composition unchanged.

Contra Costa County includes cities beside the Carquinez Strait and communities in inland valleys around Mount Diablo. The local markets are connected by routes shaped by hills and waterways.

Plan your fuel stop

For Contra Costa County travel, compare fuel against the actual destination and road approach. A station across a ridge or waterway may involve more driving than its map distance suggests.

Local background: Contra Costa County geography and local backgroundPlanning notes by WorthStop · Reviewed 2026-10-02

Compare local benchmarks

Regular gas prices by city in Contra Costa County

10 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.