California county · 54 named communities

San Diego County gas prices

$6.12 / gal Regular average · 658 locations

Since yesterday 1.9¢per gallon · 0.3% lower

Since last month 21.3¢per gallon · 3.4% lower

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: $6.138/gal, 623 locations. Last month: Sep 22, 2026: $6.332/gal, 6 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 San Diego Data through Oct 22, 2026, 8:17 PM PDT · Updated automatically

Current county averages

San Diego County price benchmark

658 Regular-price locations

Regular$6.12average per gallon

Median $6.10 · middle 80% $5.80–$6.50

658 current station prices

Midgrade$6.37average per gallon

Median $6.30 · middle 80% $6.10–$6.68

285 current station prices

Premium$6.56average per gallon

Median $6.55 · middle 80% $6.20–$6.90

405 current station prices

Diesel$8.33average per gallon

Median $8.30 · middle 80% $8.00–$8.61

199 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

Coastal, inland and border-area journeys

Mission San Luis Rey in Oceanside. Photo: MARELBU · CC BY 3.0. Resized and converted to WebP; composition unchanged.

San Diego County combines Pacific communities, inland valleys and mountain areas along California's southern border. These settings create very different local trip patterns.

Plan your fuel stop

For San Diego County travel, narrow the destination to the coast, inland community or mountain access point before comparing stops. A county benchmark is not a border-crossing fuel plan.

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

Compare local benchmarks

Regular gas prices by city in San Diego County

12 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.