The 20 states where gas prices rose the most in July

Americans have felt the effects of the Iran war at the gas pump. Frederic J. BROWN/AFP via Getty Images Since the Iran war began in late February, Americans have been feeling the effects at the gas pump.After the conflict started, prices rose sharply across the US. The national average peaked in May at roughly $4.56 per gallon, per AAA. Gas prices then fell before climbing again, and the national average gas price was $4.11 by the end of July. AAA's national average gas price rose by 6.73% in July, according to its Fuel Price Tracker. Only four states — Alaska, Oregon, Washington, and Hawaii — saw prices drop slightly in the past month. (Gas prices typically vary between states due to factors such as local taxes, proximity to supply, and operating costs.)We looked at the gas prices reported by AAA on July 31 and compared them with prices reported a month ago. We then calculated the percentage increase (or decrease) for each state to determine where prices are rising the most.In these 20 states, price increases are outpacing the national average. 20. North Carolina A gas station in Marion, North Carolina. Melissa Sue Gerrits/Getty Images Average gas price (July 31): $3.79Average price one month ago: $3.50Increase: 8.16%On June 13, 2022, North Carolina recorded its highest-ever average price at $4.67 a gallon. 19. Rhode Island Gas prices have increased by 8.19% in the last month in Rhode Island. Bohdan Bevz/Getty Images Average gas price: $4.11Average price one month ago: $3.80Increase: 8.19%On June 13, 2022, Rhode Island recorded its highest-ever average price at $5.02 a gallon. 18. Tennessee A gas pump in Nashville, Tennessee. Brett Carlsen/Getty Images Average gas price: $3.70Average price one month ago: $3.42Increase: 8.25%On June 12, 2022, Tennessee recorded its highest-ever average price at $4.64 per gallon. 17. Alabama Buc-ee's gas pumps in Robertsdale, Alabama. Carmen K. Sisson/Shutterstock Average gas price: $3.76Average price one month ago: $3.46Increase: 8.76%On June 14, 2022, Alabama recorded its highest-ever average price at $4.63 per gallon. 16. Missouri Phillips 66 gas station in Kansas City, Missouri. tupungato/Getty Images Average gas price: $3.81Average price one month ago: $3.50Increase: 8.83%On June 16, 2022, Missouri recorded its highest-ever average price at $4.68 per gallon. 15. Wisconsin A Kwik Trip gas pump in Wausau, Wisconsin. Caroline Munsterman/Getty Images Average gas price: $3.96Average price one month ago: $3.64Increase: 8.85%On June 12, 2022, Wisconsin recorded its highest-ever average price at $4.92 per gallon. 14. Montana A travel gas station in Butte, Montana. Kirk Fisher/Getty Images Average gas price: $4.29Average price one month ago: $3.94Increase: 9.02%On June 19, 2022, Montana recorded its highest-ever average price at $4.98 per gallon. 13. Arkansas A gas station in Little Rock, Arkansas. Bloomberg via Getty Images Average gas price: $3.76Average price one month ago: $3.45Increase: 9.14%On June 14, 2022, Arkansas recorded its highest-ever average price at $4.54 per gallon. 12. Georgia Gas station in Buford, Georgia. BluIz60/Getty Images Average gas price: $3.89Average price one month ago: $3.56Increase: 9.19%On June 15, 2022, Georgia recorded its highest-ever average price at $4.50 per gallon. 11. Utah Gas pump in Spanish Fork, Utah. NurPhoto/NurPhoto via Getty Images Average gas price: $4.28Average price one month ago: $3.91Increase: 9.39%On July 1, 2022, Utah recorded its highest-ever average price at $5.26 per gallon. 10. Nebraska Casey's gas station in Ogallala, Nebraska. JHVEPhoto/Getty Images Average gas price: $3.95Average price one month ago: $3.61Increase: 9.43%On June 17, 2022, Nebraska recorded its highest-ever average price at $4.79 per gallon. 9. Colorado Gas station in Lakewood, Colorado. Hyoung Chang/Denver Post via Getty Images Average gas price: $4.16Average price one month ago: $3.80Increase: 9.59%On June 21, 2022, Colorado recorded its highest-ever average price at $4.92 per gallon. 8. Minnesota Fleet Farm Fuel gas station in Waite Park, Minnesota. FireAtDusk/Getty Images Average gas price: $3.98Average price one month ago: $3.62Increase: 9.96%On June 15, 2022, Minnesota recorded its highest-ever average price at $4.76 per gallon. 7. Texas Gas prices at a Houston gas station. RONALDO SCHEMIDT / AFP Average gas price: $3.63Average price one month ago: $3.30Increase: 10.1%On June 15, 2022, Texas recorded its highest-ever average price at $4.70 per gallon. 6. Iowa A Fast & Fresh Express gas station in West Des Moines, Iowa. JHVEPhoto/Getty Images Average gas price: $3.85Average price one month ago: $3.48Increase: 10.61%On June 15, 2022, Iowa recorded its highest-ever average price at $4.76 per gallon. 5. Oklahoma Conoco gas station in Sallisaw, Oklahoma. Tamara Harding/Getty Images Average gas price: $3.74Average price one month ago: $3.38Increase: 10.79%On June 15, 2022, Oklahoma recorded its highest-ever average price at $4.67 per gallon. 4. Arizona A gas station in Nogales, Arizona. ERNESTO BENAVIDES / AFP Average gas price: $4.45Average price one month ago: $4.01Increase: 11%On June 17, 2022, Arizona recorded its highest-ever average price at $5.39 per gallon. 3. Maryland A gas station in Hyattsville, Maryland. Bloomberg/Bloomberg via Getty Images Average gas price: $4.16Average price one month ago: $3.74Increase: 11.38%On June 14, 2022, Maryland recorded its highest-ever average price at $5.02 per gallon. 2. Delaware Shell gas station in Wilmington, Delaware. Stefani Reynolds/AFP via Getty Images Average gas price: $4.16Average price one month ago: $3.68Increase: 12.92%On June 14, 2022, Delaware recorded its highest-ever average price at $4.99 per gallon. 1. Indiana Gas station at the Indianapolis Motor Speedway Road Course in Indianapolis, Indiana. Icon Sportswire/Icon Sportswire via Getty Images Average gas price: $3.63Average price one month ago: $3.18Increase: 13.98%On June 9, 2022, Indiana recorded its highest-ever average price at $5.24 per gallon. Read next Kristine Villarroel is a reporter on Business Insider's Editorial Partnerships team.Her reporting often turns data into accessible stories about how money, education, policy, and place shape Americans’ lives. She covers stories on college costs and degree outcomes, state-by-state comparisons, public officials’ salaries, the rising cost of living, travel, food, and real estate.She has previously worked writing about culture, entertainment, music, and tech. Her work has been featured on Teen Vogue and Wired. She graduated from the University of Florida with a degree in journalism. There, she worked as editor of The Independent Florida Alligator. Email Villarroel at kvillarroel@insider.com and follow her on X @ktnedelvalle James LaForge was a Life Fellow on Business Insider's Editorial Partnerships team. He has covered history, lifestyle, and culture for Business Insider and partners, including MSN, Apple News, and Yahoo.He previously wrote for New Jersey Monthly Magazine, covering lifestyle and culture content. He graduated from Ramapo College of New Jersey in 2024 with a Bachelor of Arts in Communication Arts.Selected Articles:The almost-presidents: 10 Americans who nearly assumed the nation's highest office11 times US presidents launched military operations without Congressional approvalFrom inspirational quotes to depicting himself as Jesus, see how Trump's social media posts have evolved since 2009A New Jersey mansion served as George Washington's headquarters during the Revolutionary War. 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