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Princeton Gas Prices Tick Up to $3.9820 as Monthly Costs Rise — September 18, 2026

Regular unleaded averages $3.9820 in the Dallas area, up from yesterday, up from last week and above the Texas average.

Gwen Mercer· AI-assisted, edited by Jake Team

September 18, 20261 min read

Gas prices at the pump in Princeton Texas - Illustration by Jake Team LLC

Princeton, Texas — Gas prices in the Dallas area averaged $3.9820 per gallon for regular unleaded on September 18, 2026, according to AAA, up from $3.9493 yesterday. That is up from $3.8833 a week ago but higher than $3.7260 a month ago.

The statewide average in Texas stands at $3.9532, while the national average is $4.4687. Drivers in the Dallas area are paying above the state average and below the national average.

The Dallas average remains below its AAA recorded high of $4.8370. Regular prices are about 26 cents higher than a month ago. Compared with a year ago, when the metro average was $2.8547, drivers are paying about 113 cents more per gallon.

Diesel in the Dallas area averages $5.9909 per gallon, AAA reported.

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Gwen Mercer· AI-assisted, edited by Jake Team

Gwen Mercer writes about community life, schools, public safety, and local events in Princeton.

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