Corvallis by the numbers– Gas current price: $4.43— Oregon average: $4.66– Week change: -$0.01 (-0.2%)– Year change: +$0.55 (+14.2%)– Historical expensive gas price: $5.48 (6/16/22)– Diesel current price: $5.43– Week change: +$0.05 (+1.0%)– Year change: +$0.99 (+22.4%)– Historical expensive diesel price: $6.28 (5/7/26)Metros with the least expensive gas#1. Clarksville, IN: $3.25Read on to see which metros have the most expensive gas prices. Bakersfield, CA– Regular gas price: $5.70 Elen Nika // Shutterstock#4. San Francisco, CA– Regular gas price: $5.72 Rangsarit Chaiyakun // Shutterstock#3. Salinas, CA– Regular gas price: $5.72 Daniel Avram // Shutterstock#2.