
The price of diesel fuel in the United States varies across states and is influenced by factors such as crude oil costs, emission regulations, and state taxes. As of November 2022, California had the highest diesel prices at $6.28 per gallon, while Texas offered the cheapest diesel in the country at around $3.45 per gallon. The variation in diesel prices impacts the cost of transportation for goods, which, in turn, affects the prices of various products consumers purchase, including groceries, household items, and clothing.
| Characteristics | Values |
|---|---|
| Date | June 2025 |
| Average Diesel Price in the US | $3.22 |
| State with the Lowest Diesel Price | Texas ($3.45) |
| State with the Highest Diesel Price | Hawaii ($5.64) |
| States with High Diesel Prices | California ($5.13), Pennsylvania ($6.16), Vermont ($6.16), Connecticut ($6.12), Rhode Island ($6.03), Maine ($6.00), New York ($5.98), New Jersey ($5.97), Delaware ($5.95) |
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What You'll Learn

Mississippi: cheapest diesel in the US in September 2023
As of September 2023, Mississippi has the cheapest diesel fuel in the US, priced at $4.86. This is considerably lower than states like California, which has one of the highest fuel and diesel prices in the country, at $6.28. The high fuel prices in California are often attributed to high gas taxes, regulations on greenhouse gas emissions, and inadequate crude oil reserves.
Mississippi is not the only state with low diesel prices. Texas, Louisiana, Oklahoma, Arkansas, Kansas, New Mexico, Georgia, Missouri, and Alabama also have some of the lowest diesel prices in the nation. Texas, for instance, sells diesel at $4.69, while Louisiana sells it at $4.84. These states also tend to have some of the lowest average prices for gasoline.
The low diesel prices in Mississippi and other southern states are likely due to a combination of factors, including lower taxes, different regulations, and the proximity to oil-refining infrastructure, as many of these states are closer to oil-rich areas like Texas and Louisiana.
The price of diesel fuel is an important factor in the economy, as most trucks and airplanes use diesel to power transportation. As a result, diesel prices affect the prices of many other products. When diesel prices increase, the costs of goods like groceries, household items, and clothing also tend to increase.
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Texas: second cheapest diesel in the US in September 2023
Texas has the second-cheapest diesel prices in the US, with an average price of $4.69 per gallon as of September 2023. This is significantly lower than the states with the highest diesel prices, such as California ($6.28), Pennsylvania ($6.16), and Vermont ($6.16).
Several factors contribute to Texas's consistently low diesel prices. Firstly, Texas has a favourable fuel tax structure. While the state imposes a tax of $0.20 per gallon on diesel fuel, suppliers and importers can avail a 2% discount, while distributors and importers receive a 1.75% discount if the tax is paid by the due date. This incentivizes fuel providers to pass on the savings to consumers, keeping prices competitive.
Additionally, Texas is home to a significant number of refineries and has access to a steady supply of crude oil. This abundance of fuel contributes to stable prices and ensures that diesel remains affordable for Texans.
Moreover, the competition among gas stations in Texas plays a role in keeping prices low. Gas stations, such as Sam's Club, often offer competitive prices to attract customers. The state also has a mix of self-serve and full-service stations, giving consumers options to suit their preferences and budgets.
The low diesel prices in Texas have a positive impact on the state's economy and the cost of living. As diesel fuel is used extensively in transportation and logistics, lower prices can lead to reduced costs for goods and services, making Texas an attractive destination for businesses and individuals alike.
While Texas boasts some of the lowest diesel prices in the nation, it's important to note that fuel prices can fluctuate, and rankings may change over time. Nonetheless, Texas's combination of favourable tax policies, ample fuel supply, and competitive market conditions contribute to its consistently low diesel prices.
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California: one of the highest diesel prices in October 2022
California had some of the highest diesel prices in the United States in October 2022. As of November 2022, the state had the highest average diesel price of $6.28 per gallon. This was higher than other states with relatively expensive diesel, including Pennsylvania ($6.16), Vermont ($6.16), and Connecticut ($6.12).
The high diesel prices in California can be attributed to various factors, including taxes, transportation costs, and regional supply and demand dynamics. Diesel fuel is subject to state and federal taxes, which can vary across states and contribute to price differences. California has specific environmental regulations and fuel standards that may impact the cost of diesel production and distribution within the state.
Additionally, the cost of transporting diesel fuel to California can be a factor. The state's geographical location may result in higher transportation costs, which are ultimately passed on to consumers in the form of higher fuel prices. California's diverse terrain, including coastal areas and mountainous regions, can also impact the distribution and accessibility of diesel fuel, affecting the overall price.
Regional supply and demand also play a crucial role in diesel pricing. California is known for its large and diverse economy, with significant agricultural, industrial, and technological sectors. The high demand for diesel fuel to support these industries and the state's vast transportation network can drive up diesel prices. Additionally, California's commitment to environmental sustainability and the development of alternative fuels may influence the supply and pricing of traditional diesel fuel.
It's worth noting that diesel prices fluctuate daily and are influenced by dynamic market forces. While California consistently ranks among the states with higher diesel prices, the specific ranking can shift over time due to various economic, political, and environmental factors. Nonetheless, California's diesel prices in October 2022 reflect the state's ongoing trend of having some of the highest fuel costs in the nation.
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Pennsylvania: second-highest diesel price in October 2022
As of November 2022, Pennsylvania had the second-highest diesel prices in the United States, at $6.16 per gallon. Only California had higher prices, with an average of $6.28 per gallon.
The high diesel prices in Pennsylvania and California are notable, especially when compared to Texas, which had the lowest diesel prices in the country at $3.45 per gallon in September 2024. The Midwestern and Great Plains states, such as Iowa, Nebraska, and Kansas, typically maintain middle-of-the-road diesel prices, possibly due to their central location reducing transportation costs.
The variation in diesel prices across the United States can be influenced by various factors, including crude oil costs, supply restrictions, demand outlooks, and state regulations and taxes. California's stringent emission regulations and state taxes, for example, likely contribute to its high diesel prices despite being an oil-rich state.
The impact of diesel prices extends beyond just the cost of transportation. As most trucks and airplanes use diesel fuel, an increase in diesel prices can lead to higher prices for many other products. When diesel costs rise, the prices of goods like groceries, household items, and clothing often increase as well, as these products are typically transported using diesel-powered vehicles.
While the data shows that Pennsylvania had the second-highest diesel prices in the country as of November 2022, it's important to remember that gas prices can change daily. The relative differences in average prices between states may remain fairly consistent, but current prices will likely differ from posted prices.
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Diesel prices fluctuate: prices vary daily and change quickly
The price of diesel fuel is subject to constant fluctuation, with prices varying from day to day and changing quickly. Several factors influence diesel prices, including the cost of crude oil, which regularly accounts for around 50% of end consumer prices. Other factors, such as supply restrictions and demand outlooks, can also impact the price at the pump. For example, if there are issues with the supply of crude oil or a decrease in demand, diesel prices may drop as a result.
The price of diesel fuel can vary significantly from state to state. As of November 2022, California had the highest diesel prices in the nation at $6.28 per gallon, followed by Pennsylvania, Vermont, Connecticut, and Hawaii, all with prices above $6 per gallon. In contrast, Texas had the lowest diesel prices, with an average of $3.45 per gallon. The variation in prices between states can be attributed to various factors, including local regulations, taxes, and transportation costs.
The American Automobile Association (AAA) tracks the average gas prices by state, providing valuable insights into the fluctuations and variations in diesel prices across the country. However, it's important to note that even within a single state, diesel prices can vary from one gas station to another, and prices can change daily.
The impact of diesel prices extends beyond just the cost of fuel. Due to the widespread use of diesel-powered vehicles in transportation, fluctuations in diesel prices can affect the prices of many other products. When diesel prices increase, the costs of transporting goods to stores and warehouses also go up, leading to higher prices for groceries, household items, clothing, and other consumer goods.
Staying informed about diesel prices and their fluctuations can help consumers and businesses make more informed decisions about their fuel usage and overall expenses. By understanding the factors influencing diesel prices and the potential impact on the cost of goods, individuals and organizations can better navigate the dynamic landscape of diesel fuel pricing.
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Frequently asked questions
As of 2025, Texas has the cheapest diesel fuel in the USA, with an average price of $4.69.
In 2023, Mississippi had the cheapest diesel fuel, with prices under $4 per gallon.
As of November 2022, California had the highest diesel fuel prices, at $6.28 per gallon.
California's high diesel prices are due to a combination of factors, including high gas taxes, greenhouse gas emission regulations, and inadequate crude oil reserves.











































