How gas prices have changed in Kennewick in the last week

Stacker compiled statistics on gas prices in Richland-Kennewick-Pasco, WA metro area using data from AAA. Gas prices are current as of July 20.

Kennewick by the numbers
- Gas current price: $4.78
--- Washington average: $5.01
- Week change: -$0.01 (-0.1%)
- Year change: +$0.58 (+13.8%)
- Historical expensive gas price: $5.46 (5/7/26)

- Diesel current price: $5.81
- Week change: +$0.16 (+2.9%)
- Year change: +$0.83 (+16.7%)
- Historical expensive diesel price: $6.93 (4/10/26)

Metros with the least expensive gas
#1. Clarksville, IN: $3.25
#2. Evansville, IN: $3.27
#3. Columbus, IN: $3.28

Read on to see which metros have the most expensive gas prices.