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Whataburger

4.2
(2672 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
2,672 reviews
5 stars
1,562
4 stars
563
3 stars
218
2 stars
104
1 star
188
  • CB
    cece bryant
    2 days ago
    5.0
    Absolutely LOVE!!!
  • AM
    Adriana Medina
    4 days ago
    2.0
    I come here regularly usually pretty nice place but the most recent time i came here there were two male employees who reeked of drugs and were yelling and singing lewd lyrics. And they gave me my order completely wrong, not a single thing that i ordered was in my bag. And im not allowed to eat pork and they loaded my burger i didn’t order with bacon. Which sucks because i’ve never had issues with this location before
  • JM
    Junyur Martinez
    Mar 28, 2026
    5.0
    “Great customer service and really fresh food. Delivery was faster than expected.” “Customer service was great, food was fresh, and everything showed up super fast.” “Fresh food, fast delivery, and honestly great service all around.” “Food tasted fresh and the delivery was quick. Customer service was solid too.”
  • JJ
    Joseph Johnson
    Mar 20, 2026
    5.0
    Delicious "fast food". Ingredients seemed above the usual grade of fast food. Food took a bit longer than expected but was worth the wait. Definitely recommend
  • TR
    Tim Redus
    Mar 15, 2026
    1.0
    Placed order well before 11AM for breakfast they said they can't get it to me untill 11PM tonight .... I had been waiting for my order since before 11am for 20 minutes... Why they can't just accommodate the customer who's been waiting 20 minutes... How long before y'all came up to me and told me it'd be midnight before I'd get my order??? Why when I checked in did y'all not inform me you can't make breakfast items even though I placed the order before 11 for pick up????

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 April 12, 2026Yext Knowledge Graph
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