Gas prices in Austin-San Marcos
Daily metro average from AAA (2026-09-11), per gallon including taxes, for the Austin-San Marcos area of Texas.
Austin-San Marcos runs $0.29 a gallon above the Texas average of $3.62. It is the 16 cheapest of 27 Texas metros AAA tracks.
Nearest Texas metros on price
The metros immediately either side of Austin-San Marcos in Texas, so you can see whether paying $3.91 here is normal or not.
| Metro | Regular | vs Austin-San Marcos |
|---|---|---|
| Fort Worth-Arlington | $3.88 | −$0.03 |
| Dallas | $3.88 | −$0.02 |
| Sherman-Denison | $3.89 | −$0.02 |
| Killeen-Temple-Fort Hood | $3.91 | −$0.00 |
| Austin-San Marcos | $3.91 | — |
| Waco | $3.92 | +$0.01 |
| San Angelo | $3.92 | +$0.01 |
| San Antonio | $3.94 | +$0.03 |
| Odessa | $3.94 | +$0.03 |
State average, trend, station map and calculators.
Your own area's price and a live map of the stations around you.
Frequently asked questions
How much is gas in Austin-San Marcos right now?
Regular gasoline averages $3.91 per gallon across Austin-San Marcos today (AAA metro average, 2026-09-11). Midgrade is $4.38, premium $4.75 and diesel $5.63.
Is gas cheaper in Austin-San Marcos than the rest of Texas?
No — Austin-San Marcos runs $0.29 a gallon above the Texas average of $3.62.
Where does Austin-San Marcos rank in Texas?
Austin-San Marcos is the 16th cheapest of 27 Texas metros AAA tracks.
Are gas prices in Austin-San Marcos higher than a year ago?
Yes — regular is 34.7% higher than this time last year ($2.90/gal then, $3.91 now).