Gas Prices in Chicago, IL Today

Updated April 5, 2026 — Prices updated regularly from EIA data

$3.31

Average Regular Unleaded — Chicago, Illinois

Current Gas Prices in Chicago

Today in Chicago, Illinois, regular gas is averaging $$3.31 per gallon. Prices across the metro vary by as much as 20-30 cents, so using a price comparison app before every fill-up pays off.

Fuel TypePrice / GallonGradeTrend
Regular Unleaded$3.3187 octane▲ Rising
Mid-Grade$3.8389 octane▲ Rising
Premium$4.1391-93 octane▲ Rising
Diesel$4.48N/A▲ Rising

Price Comparison

Chicago Average
$3.31
Regular Unleaded
Illinois State Average
$3.36
$0.05 below the Illinois average
National Average
$3.99
$0.68 below the national average

About Gas Prices in Chicago

Local Chicago drivers have learned key strategies for minimizing fuel costs. Fill up on Mondays or Tuesdays when prices are typically at their weekly low. Avoid stations within a mile of highway exits — the convenience markup adds real cost. Loyalty apps from major brands can save 5-10 cents per gallon with minimal effort.

Gas Prices by Brand in This City

Estimated prices based on brand modifiers. Sorted cheapest to most expensive.

CHEAPEST
Costco
$3.16
Speedway
$3.28
Circle K
$3.29
Sunoco
$3.32
Marathon
$3.33
BP
$3.35
Mobil
$3.36
Exxon
$3.37
Shell
$3.39
Chevron
$3.41

Fuel Type Prices in This City

Regular Unleaded
87 octane
Premium Gasoline
91-93 octane
Diesel Fuel
N/A

Gas Prices in Nearby Cities

Evanston$3.47Des Plaines$3.62Schaumburg$3.58Naperville$3.43Joliet$3.32Elgin$3.56Waukegan$3.44Aurora$3.35Kenosha$2.84Racine$3.01
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Frequently Asked Questions

A 10-cent savings on 15 gallons equals $1.50. If the cheaper station is 5 miles away and your car gets 25 MPG, the detour costs about 0.4 gallons. Savings above 15 cents per gallon are consistently worth moderate detours.
Most states have price gouging statutes that activate during declared emergencies. Outside of emergency declarations, gas stations set prices based on market conditions. Normal price variation between stations is competition, not gouging.
GasBuddy is the most comprehensive option for Chicago with millions of user-reported prices updated in real time. Waze integrates gas prices into navigation. GetUpside/Upside offers cashback on purchases at qualifying stations.
Each gallon of gas in Chicago, Illinois includes 18.4 cents in federal excise tax plus {tax} cents in Illinois state fuel tax — a combined {totalTax} cents per gallon. On a 15-gallon fill-up, you pay ${taxTotal} in fuel taxes alone.
Today's average gas price in Chicago is $$3.31 per gallon for regular unleaded. Premium is approximately ${premPrice} and diesel runs ${dslPrice}. Individual station prices vary by 15-25 cents across the metro area.

Related Gas Price Pages

Gas Prices in IllinoisCheapest Gas in ChicagoGas Prices Near ChicagoCompare All StatesRegular Unleaded in ChicagoPremium Gasoline in ChicagoDiesel Fuel in ChicagoShell - ChicagoExxon - ChicagoBP - ChicagoChevron - ChicagoMobil - ChicagoGas Prices in EvanstonGas Prices in Des PlainesGas Prices in Schaumburg