There is a heritage and history behind ARCO that is now a part of the American traveler’s landscape. Since the early 1970s, we have found ways to operate efficiently so that we can pass savings on to you at the pump. With a firm focus on our low-price objective, we are still committed to offering good quality gasoline, so that your vehicle performs efficiently. Indeed, good gas at a good price. More than 1,300 ARCO-branded sites currently operate in five western states: California, Nevada, Oregon, Washington and Arizona.