How gas prices have changed in Decatur, Illinois in the last week
Written by:
May 18, 2026
pan demin // Shutterstock
How gas prices have changed in Decatur, Illinois in the last week
compiled statistics on gas prices in Decatur, IL metro area using data from . Gas prices are current as of May 18.
Decatur, Illinois by the numbers
- Gas current price: $4.80
--- Illinois average: $5.05
- Week change: -$0.12 (-2.4%)
- Year change: +$1.56 (+47.9%)
- Historical expensive gas price: $5.07 (6/23/22)
- Diesel current price: $6.12
- Week change: +$0.12 (+2.1%)
- Year change: +$2.74 (+81.3%)
- Historical expensive diesel price: $6.20 (5/14/26)
Metros with the least expensive gas
#1. McAllen-Edinburg-Mission, TX: $3.78
#2. Brownsville-Harlingen, TX: $3.79
#3. Laredo, TX: $3.80
Read on to see which metros have the most expensive gas prices.
You may also like:
Highest-rated cheap eats in Decatur, Illinois by diners
1 / 5
Elen Nika // Shutterstock
#5. San Luis Obispo-Atascadero-Paso Robles, CA
- Regular gas price: $6.30
2 / 5
Daniel Avram // Shutterstock
#4. San Rafael, CA
- Regular gas price: $6.31
3 / 5
jittawit21 // Shutterstock
#3. San Francisco, CA
- Regular gas price: $6.31
4 / 5
Istvan Csak // Shutterstock
#2. Salinas, CA
- Regular gas price: $6.31
5 / 5
Christian Mueller // Shutterstock
#1. Napa, CA
- Regular gas price: $6.37