Illinois gas prices

Gas Prices in Illinois Today

Current local gas prices may vary across Illinois.

This page provides general gas price guidance and local fuel checklists for Illinois. When reliable state averages are available, this page can show generated gas price data; otherwise it avoids unverified station prices, discounts, station rankings, and real-time local price claims.

Data status

Illinois gas price averages

Live gas price averages are not currently displayed on this page.

Regular average

$4.52

Premium average

$5.58

Diesel average

$5.64

Updated: June 9, 2026

Source: AAA Gas Prices

Price context

What affects gas prices in Illinois?

Gas prices across Illinois can change for several reasons. This page explains the main factors without showing unverified live prices.

State and local taxes

Fuel taxes and local fees can affect the price drivers see at the pump.

City and station location

Prices can differ by city, neighborhood, highway exit, station brand, and local competition.

Fuel type

Regular, premium, and diesel are separate fuel types and should be compared separately.

Supply and demand

Regional demand, travel patterns, and local availability can affect prices.

Seasonal travel

Holiday weekends, summer driving, and major travel periods can put pressure on local fuel markets.

Refinery or distribution conditions

When generally relevant, refinery maintenance, distribution issues, or transport constraints can affect regional prices.

Before filling up

What to check before filling up

Current prices can change quickly. Before buying fuel, compare the details that can affect the final price you pay.

Regular vs. premium vs. diesel

Compare the fuel type your vehicle uses instead of assuming all fuel prices move the same way.

Nearby station prices

Check more than one nearby station when you need the most current local price.

Cash vs. card prices

Some stations may display different prices depending on payment method.

Membership discounts

Warehouse clubs, rewards programs, and retailer memberships may affect the final price.

Local fuel availability

Availability can vary by station, especially during disruptions, severe weather, or high-demand periods.

Planned data fields

Illinois gas price data fields

This page will be expanded as reliable gas price sources are added. Unverified gas prices, station data, averages, or discounts are not displayed.

Regular gas average