(Garden City, UT) — Statewide, the average price for gas is now just over four-dollars and 20-cents. Triple-A says the highest average price can be found in Rich County where it’s now four-dollars and 50-cents. The least expensive average price is in Juab County where gas is now four-dollars and 15-cents. In Salt Lake County, the average price for a gallon of self-serve regular gas is four-dollars and 18-cents.