According the U.S. government, there's only one region in the U.S. where a gallon of regular gas costs more than $4 a gallon, and that's the West Coast (there are five regions altogether than the government has created to track). And within the West Coast, gas in Los Angeles is running 11 cents higher that the region as a whole, reports GasBuddy.com: $4.08 versus $4.19.
Gas in California is always ore expensive than in the rest of the country. In fact, if you take California out of the West Coast region, the average price-per-gallon promptly falls 16 cents, to $3.92. At which point, the New England region then has the most expensive gas.
In L.A., our gas has been running above $4 a gallon since early-August, when the fire at Chevron's Richmond refinery took out one of the main suppliers of the special environmentally friendly formula that's required by law.
Chevron still hasn't figured out when the Richmond refinery will come fully back online. So $4-a-gallon — And more! — gas is something Angelenos can look forward to for quite a bit longer.