How gas prices have changed in Decatur, Illinois in the last week

Written by:
August 1, 2025
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How gas prices have changed in Decatur, Illinois in the last week

Stacker compiled statistics on gas prices in Decatur, IL metro area using data from AAA. Gas prices are current as of August 1.

Decatur, Illinois by the numbers
- Gas current price: $3.25
--- Illinois average: $3.45
- Week change: -$0.01 (-0.2%)
- Year change: -$0.45 (-12.2%)
- Historical expensive gas price: $5.07 (6/23/22)

- Diesel current price: $3.67
- Week change: +$0.02 (+0.6%)
- Year change: +$0.00 (+0.1%)
- Historical expensive diesel price: $5.58 (6/24/22)

Metros with the least expensive gas
#1. McAllen-Edinburg-Mission, TX: $2.57
#2. Laredo, TX: $2.58
#3. Brownsville-Harlingen, TX: $2.60

Read on to see which metros have the most expensive gas prices.

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1 / 5
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#5. Salinas, CA

- Regular gas price: $4.73
2 / 5
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#4. Santa Rosa, CA

- Regular gas price: $4.76
3 / 5
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#3. Napa, CA

- Regular gas price: $4.82
4 / 5
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#2. San Luis Obispo-Atascadero-Paso Robles, CA

- Regular gas price: $4.85
5 / 5
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#1. Lihue (Kauai), HI

- Regular gas price: $5.02
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