Gas Prices in Indianapolis Today

Indianapolis drivers are paying around $3.20 per gallon for regular unleaded as of mid-March 2026, a solid 52 cents below the national average of $3.72. Indiana has long been one of the cheapest states to buy gas in the Midwest, and Indianapolis sits at the center of a refinery-connected distribution network that keeps prices well below what drivers pay in neighboring Illinois, Ohio, or Michigan.

Why Indiana Gas Is Cheaper Than Its Neighbors

The state gas tax is 33 cents per gallon, lower than Illinois (66.6 cents), Ohio (38.5 cents), and Michigan (30.5 cents plus 6% sales tax). Indianapolis is also within easy pipeline reach of the massive BP Whiting refinery in northwest Indiana, one of the largest in the country. Short supply chains mean lower delivery costs.

Indianapolis is also headquarters of the Speedway brand, which competes aggressively on price in its home market. That competitive pressure keeps all stations honest.

The Iran Conflict Hits the Midwest

The ongoing conflict with Iran and disruptions to the Strait of Hormuz have pushed Brent crude from around $70 to over $110 per barrel. Indianapolis has seen prices climb roughly 74 cents in the past month. Midwest refineries process a mix of domestic and Canadian crude, providing some insulation, but global pricing still dictates the baseline. Even after the surge, $3.20 is still well below the national average.

Where to Find the Cheapest Gas in Indianapolis

The best prices cluster along corridors radiating out from the I-465 beltway, where high-volume stations compete for commuter traffic.

Search by ZIP code:

• Downtown Indianapolis, 46204, limited stations, captive-audience pricing for office workers and convention visitors
• East Side, 46201, Washington Street corridor, more affordable than downtown but mixed station quality
• Broad Ripple / Nora, 46220, north-central, moderate pricing along Keystone Avenue
• Fishers, 46038, I-69 corridor northeast of the city, strong competition from multiple chains
• Carmel, 46032, US-31 and Keystone corridors, several warehouse club options
• Greenwood, 46143, south side along I-65, consistently among the cheapest in the metro

The Illinois Border Comparison

Cross the state line into Illinois and the difference is stark. Chicago-area gas prices regularly run 60–80 cents higher than Indianapolis thanks to Illinois's sky-high state and local fuel taxes. Drivers near Plainfield and Brownsburg pay a full dollar less per gallon than Chicago suburbanites.

How to Save on Gas in Indianapolis

• Fill up along I-65 south near Greenwood or I-69 north near Fishers, high-volume highway stations offer the best prices
• Kroger fuel points, Indianapolis is strong Kroger territory, and the fuel rewards can stack up to 40 cents off per gallon
• Costco in Castleton and on the west side, reliably 15–25 cents below the metro average
• Check Gas Price Check before you head out, even in a cheap market, the spread across Marion County can hit 30 cents on any given day
• Avoid the stations on Capitol Avenue and near Lucas Oil Stadium, event-day pricing and low competition keep these consistently overpriced

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