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Whataburger

4.2
(2,745 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
2,745 reviews
5 stars
1,612
4 stars
574
3 stars
222
2 stars
107
1 star
193
  • MS
    Matthew Smith
    today
    1.0
    Soooo don’t eat whataburger anymore. Since they started getting food from a different manufacturer, me and twin was so sick we look like we on ozempic. Had a burger and tenders and when I tell you that shit came with a vengeance, please believe me. It’s so bad I could give it zero stars if I could.
  • SS
    sikcents13
    Aug 21, 2026
    5.0
    The service was great and the food came out fast! I will definitely be coming back!
  • AG
    Audrey Gutierrez
    Aug 18, 2026
    5.0
    This whataburger place was so friendly and on top of things.
  • JR
    Just Reading
    Aug 11, 2026
    4.0
    Ernt through drice thru. Had to go inside. The order was incomplete and incorrect. Added sauces and cheese was not put on the chicken sandwich. My apple pie was missing, as well as a fry, and my burger was not cut in half. Store was clean & staff was friendly.
  • KN
    kaitlyn noski
    Aug 8, 2026
    5.0
    richard is the best employee on the planet, if you’re the manager and you’re reading this give him a raise please #whataburger4lyfe

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 August 30, 2026Yext Knowledge Graph
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  • Phone number
  • Official website
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