Oklahoma Gas Prices This Week

In the EIA’s July 2026 (revised August 2026) table of motor fuel taxes, Oklahoma’s state taxes and fees on gasoline total 20.0¢ a gallon, tied for the 5th-lowest of the 50 states and D.C. The 51-jurisdiction average is 33.8¢, and the federal tax adds 18.4¢ everywhere. The 19¢ excise dates from July 1, 2018, when a school-funding law raised it by 3¢, the first increase since 1987. A 1¢ fee for underground storage tank cleanup is added.

Oklahoma has five refineries with about 544,000 barrels a day of combined capacity in the EIA’s January 2026 count: Phillips 66 at Ponca City, two HF Sinclair plants in Tulsa, Valero at Ardmore, and CVR at Wynnewood. Cushing, in the center of the state, is the delivery point for the benchmark West Texas Intermediate crude oil futures contract. The EIA includes Oklahoma in its Midwest region (PADD 2).

In the EIA’s annual data, Oklahoma was among the cheapest states from the mid-1990s through the late 2000s: second cheapest in 1995, 2002–2006, and 2008, and third in 1994 and 1996–2000. It has since moved toward the middle of the low-priced group, ranking tenth in 2020 and 2024. Its average gap to the U.S. average went from 10.7¢ below in the 2000s to 24.2¢ below in 2020–2024, although neighboring Texas, Louisiana, and Arkansas widened their discounts more. Oklahoma’s record annual average is $3.63 in 2022. Adjusted for inflation, the most expensive year was 1981, at $4.83 in 2025 dollars.

The Midwest region’s weekly data show a wide seasonal range: prices average 9.8% below the year’s mean in January and peak at 7.5% above in June, falling back to about the annual mean by October.

Oklahoma ranked 10th-cheapest among the 50 states and D.C. in 2024, which is the 42nd-most-expensive when counted from the other end. Its cheapest ranking in any year from 1970 to 2024 was 2nd-cheapest in 1995, 2002–2006, 2008. Its least favourable was 31st-cheapest (17th-most-expensive) in 1978, the only year of 55 when the state averaged above the U.S. figure.

Earlier rankings were 15th-cheapest in 1970, 17th-cheapest in 1980 and 13th-cheapest in 1990. The annual average was $1.38 in 2000 and $2.60 in 2010, and it was $1.95 in 2020. The 2024 average of $3.04 sits below the $3.63 record set in 2022.

Changes from one year to the next include a rise of 41.1% in 2021 and a fall of 28.4% in 2009. In constant 2025 dollars, the 2024 average equals $3.12, compared with $4.83 in 1981 and $1.87 in 1998. From 2014 to 2024 the constant-dollar average fell 27.2%, while the average at the pump fell 3.5%. The EIA publishes only annual averages for Oklahoma, and for each year after 2010 it estimates the figure from the change in the state's region.

Among bordering states in 2024, Texas was the lowest at $2.88 and Colorado the highest at $3.13. Oklahoma averaged 15.5¢ above Texas and 9.6¢ below Colorado. Oklahoma's state gasoline taxes and fees of 20.0¢ (EIA table, July 2026) were 13.8¢ below the 33.8¢ average across the 50 states and D.C.