Joliet Gas and Diesel Prices: Station Lists $4.499 and $5.499

A fuel-price check at the 7-Eleven station at 1621 West Jefferson Street in Joliet found regular gasoline at $4.499 per gallon and diesel at $5.499 per gallon on Wednesday, July 29, 2026.

Those are station-level prices, not an official citywide average. The station listing provides a current snapshot for one Joliet location, while prices at other stations may differ.

Regular gas was above the latest Joliet average

The West Jefferson Street station’s regular-gas price was about 20 cents higher than the latest available Joliet average of approximately $4.30 per gallon, dated July 26. Because the two figures come from different dates and represent different types of data, drivers should treat the comparison as a reference point rather than a citywide price reading for July 29.

For broader context, AAA listed the July 29 Illinois average at $4.317 per gallon for regular gasoline and $5.224 for diesel. The Chicago-area averages were $4.436 for regular gasoline and $5.384 for diesel.

Diesel was $1 more per gallon at the checked station

At the Joliet station, diesel was exactly $1.00 per gallon more than regular gasoline. That gap is especially relevant to contractors, delivery operators, landscapers, repair companies, restaurants with frequent deliveries, commercial fleets, and other businesses that rely on diesel vehicles or equipment.

A 50-gallon fill-up at the listed diesel price would cost approximately $274.95 before discounts or loyalty-program savings. A household buying 15 gallons of regular gasoline at the listed price would pay about $67.49. Actual costs will vary with tank size, fuel economy, driving distance, and the station selected.

Comparing nearby stations may matter

The difference between the West Jefferson Street listing and the dated Joliet average shows why city and metro averages do not describe every pump. For commuters and households, even a modest station-to-station difference can add up over repeated fill-ups.

For contractors, delivery drivers, service businesses, and fleets, the effect can be larger because trucks, vans, and equipment may use more fuel. Higher diesel prices can therefore put more pressure on operating costs, particularly for businesses with regular routes or heavy equipment.

Drivers may want to compare several nearby stations and check whether a loyalty program, cash price, fleet account, or mobile-payment discount changes the final cost.

What are the highest and lowest pump prices you are seeing in Joliet? Share the station and fuel type so other local drivers can compare.

Sources

• 7-Eleven station fuel listing
• AAA Illinois Gas Prices
• Joliet gas-price tracker