There are 6 Regular gas price reports in the past 5 days in Peoria, IL Zip Code 61614.The average Regular gas price in Peoria, IL Zip Code 61614 is $2.36, which is $0.42 lower than U.S. national average Regular gas price $2.78.here are 6 Regular gas price reports in the past 5 days in Peoria, IL Zip Code 61614.