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Whataburger

4.2
(2,711 reviews)

Business Details

4040 S INTERSTATE 35, SAN MARCOS, TX
78666, United States
(512) 754-7375
http://www.whataburger.com/

About

Fast Food RestaurantBurger JointChicken RestaurantBreakfast RestaurantTake Out RestaurantAmerican Restaurant
Since 1950, Whataburger has proudly served a bigger, better burger. It all started when a young entrepreneur named Harmon Dobson had a bold idea: to serve a burger so big that it took two hands to hold, and so good that after a single bite customers couldn't help but exclaim, “What a burger!” He named his humble burger stand in Corpus Christi, Texas, “Whataburger.” Over six decades later, we're still family owned and operated. Each and every Whataburger® is still made to order. We still use 100% pure beef and serve it on a big, toasted five-inch bun. And now, as we proudly serve burgers, chicken, salads and breakfast at more than 800 Whataburger locations across the country, that first burger stand is still close to our hearts.

Details

  • Dine-inAvailable
  • DeliveryAvailable
  • TakeoutAvailable
  • Credit cardAvailable

Location

Whataburger
4040 S INTERSTATE 35, SAN MARCOS, TX
78666, United States

Hours

MondayOpen 24 Hours
TuesdayOpen 24 Hours
WednesdayOpen 24 Hours
ThursdayOpen 24 Hours
FridayOpen 24 Hours
SaturdayOpen 24 Hours
SundayOpen 24 Hours

Reviews

4.2
2,711 reviews
5 stars
1,587
4 stars
571
3 stars
220
2 stars
106
1 star
190
  • LP
    Linda ann Parsons
    5 days ago
    4.0
    Takeout window was good in service
  • SD
    Sir Thaddigren Dentiata
    Jun 29, 2026
    2.0
    Very slow at this location
  • JC
    José Carrasco
    Jun 16, 2026
    4.0
    Excelente la comida, en esta sucursal que visitamos la atención fue un poco indiferente, las mesas un poco sucias, pero la comida vale la pena, probamos las hamburguesas y el sándwich; ambos muy recomendables. Hay estacionamiento en el lugar y servicio en carro, para llevar.
  • CB
    Calvin Buell
    Jun 7, 2026
    1.0
    Usually average experience but the last time absolutely sucked.
  • CC
    Chase
    May 29, 2026
    2.0
    Drive through took forever, confused our order, messed up ours and the people in front of us orders, charged us more at the window than what was told, missing items and no receipt to check what was paid for, no apologies either.

Frequently Asked Questions About Whataburger

What are the operating hours for Whataburger in San Marcos, TX?

Whataburger in San Marcos is open 24 hours every day of the week.

Does Whataburger offer curbside pickup and delivery services?

Yes, Whataburger provides both curbside pickup and delivery services for customer convenience.

Brand Certified Facts from Whataburger

This information is certified by Whataburger and published from the brand's official system of record. Data is distributed through an enterprise-grade knowledge management platform. Learn more about our data sources
Certified July 05, 2026Yext Knowledge Graph
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  • Legal business name
  • Hours of operation
  • Phone number
  • Official website
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