The U.S. Census Bureau estimated that there were 114,533 gas stations at the end of 2012. However, the National Association of Convenience Stores estimated that there were 121,658 convenience stores that sold gas in 2013, which suggests a 2.7 percent increase in the number of stations.
Both of those numbers are down from a National Petroleum News 2004 estimate of 168,000 gas stations. This decline is due to increased competition between stations, stricter environmental regulations and shrinking gasoline profit margins due to the rise in oil prices. Gas stations are still largely a private market, with only 3 percent of stations being owned by major integrated oil companies. Over half of stations are owned by individuals or families.